Hope.for.the.best

I am so sorry to hear about your mishap. You have been very brave to reach out for help. I am glad that you are working with your psychiatrist for treatments. Other than medication, I think you would benefit from counselling. Have you seen a psychologist? Many schools offer counselling services to students for free. It would be good if you can find a therapist that is specialised in trauma. You can also call some national counselling helplines that operate 24 hours. You may need to wait quite a bit before getting connected to someone, but these are helpful contacts in the middle of the nights. 

That certainly doesn't sound normal, given that you are about to submit your dissertation. From your description, I do feel that your advisor somehow treats you unfairly compared to his other students, as you don't get the regular meetings and feedback as they do. However, I agree with fuzzylogician that you need to approach the situation carefully. Other than your dissertation committee, do you have other advisors? Very often, PhD students have co-advisors on top of their primary advisor. In my school, all PhD students must have at least 3 advisors. I had 4.
In some situation, it is the co-advisor who offers the most help to students. That's exactly my case. My primary advisor is a selfish man who cares more getting publications (for his own sake) than my dissertation. He and my other co-advisor pushed me hard for more and more experiments, and I simply could not have time to work on my dissertation. It happened that another co-advisor, *Ben, who seemed not to care about me over the course of my PhD, stood up for me at that critical moment. Of course, that got my main advisor angry and he played nasty by deliberately delaying my submission, e.g. not reviewing my drafts in a timely manner and yelling at me when I wanted to work out a turnaround schedule. It took me a lot of effort to get my dissertation out. Those final months of my PhD were the worst time of my life. 
Back then, I only met *Ben once a month at most. I get on well with him, but he would not be the first person that came to my mind when I needed help. Even up to now, I still cannot believe that he was that supportive when I turned to him in desperation. So, try to reach out to your other advisors; you may be surprised! By the way, I am now working for *Ben as a postdoc. 
Have faith that this too shall pass. Wish you all the best! 
*pseudonym 

Absolutely no problem. You will never get to finish a project anyway, because you can always think of future work and directions. What you could do is present whatever you have got with some justifiable conclusions, then discuss some limitations and future work. 

Thanks @TakeruK and @juilletmercredi for your replies. As Andy and Cecilia run out of funding, I am the only one in the group who can do that experiment. There aren't any other PhD students, postdocs etc. Andy and Cecilia are indeed toxic people to work with. Unfortunately, I only found out towards the end of my PhD. They were not like that before they brought up that experiment. Anyway, if I told them upfront that I did not want to do that experiment unless I got paid, I would only get both of them yelling at me. It would make the situation even worse. So I could only come up with some justifiable excuses when they made me do that experiment, like "something was up in my family". That's what I meant by lying. In fact, something was indeed going on in my family, so there were some truths in my "lies".  
I do not intent to break my promise. I just don't want to work as a volunteer for months, as it does not look good on my CV. Obviously, Ben is unable to wait for months before I start my postdoc. Seeing that Ben and his department head are renowned researchers in my field, this is an opportunity that I can't afford to miss. Since some aspects of my postdoc project overlap with my PhD one, Ben is more than happy for me to do that experiment along with my new project. So I still keep my promise to do that experiment after I submitted my dissertation! 
I can see where Andy and Cecilia are coming from. Apart from their "concern" about me not working on the project anymore, they are unhappy that Ben will take over my PhD project from now on. Long story short, the project was initiated by Andy and Cecilia, but they are not experts of the field, so they included Ben, who is from a different department, as my advisor. At first, things worked out very well, but obviously became problematic when my work had the potential to go to a good journal. Andy could not threaten to not let me submit my dissertation, but he had played nasty by deliberately reviewing my dissertation drafts slowly. Now, expertise and money issues aside, I am employed by Ben. That means Ben is going to dominate how the project will go. Andy and Cecilia now need to get Ben's "permission" before they can order me to do any experiments they want. 
Andy and Cecilia are my great sources of anxiety. I only realised how much stress they gave me until I started working for Ben. Instead of waking up in a lot of stress, I embrace every day with my job now! Although not desirable, it is inevitable that I need to burn a bridge with someone at some stages. Let's hope that by completing that experiment, things would clear up a bit. 

How many cans of diet coke do you drink each day? I think you could try cutting down the numbers gradually. For example, you drink 3 cans a day. Try to cut down to 2 in the coming week. Once you can achieve this goal, cut it down to 1 in the week after and so on. At the same time, you should find healthy alternatives to release stress. For example, when you feel like drinking diet coke under stress, go for a 10-min walk instead. 

Firstly, do you struggle with finding to sleep or falling asleep (i.e. insomnia)? If it is the former, then the best tip I would offer is to get enough sleep. You just cannot function well and remain productive and motivated when you are sleepy. Sleeping is also very helpful to consolidate your memory. You often find it easier to remember things you have studied after a good night sleep (and this has been shown in research). If it is the latter, then you need to find ways to reduce your stress, like having a walk, doing meditation etc. Of course, if these cannot help, then you should seek support from a school counsellor. 

Since the position is with one of your advisors - you can use the knowledge of his past behavior to decide how forthcoming you should be.  How has he treated students who have graduated and went on to pursue careers in industry?  If it is neutral/positive, I think you can be more forthcoming about using the postdoc to figure out your ultimate direction, but emphasize that you are really excited about the position because of X, Y, and Z.  If it is negative/unknown, you might want to be less forthcoming about your uncertainty, mention that you are interested in academia (which is true!), but don't try to quantify how interested, and focus on the positives of the job opportunity.
Personally - one of the best things about doing a postdoc is being able to have that time and space to ensure that I do want to pursue an academic career.  I was honest about being uncertain in my interviews - but I said that I was leaning towards pursuing an academic career which is still true. However, I am in a field where a good proportion of graduates pursue non-academic positions so I don't think it's too surprising to faculty when students mention this.

Even though I am yet to defend my PhD, I have pretty much gone through the whole journey. I too saw and heard a lot of horror stories, like two of my friends started PhD with great passion, but then their research did not go well and they quit with a master. They are those who were very outstanding in undergrad. Another friend also had an eventful journey before he got his PhD. His marks were good enough to be accepted straight into PhD after undergrad, but he did not do well enough in the first semester that he was made to finish a master before reentering a PhD program. Somehow he chose the wrong advisor when he finished his master, and that professor was caught with academic misconduct. He had to switch to another advisor to finish his PhD dissertation. His defend was not any smoother either, in which he needed another 8 months for major revision. I was quite taken aback by these mishaps at first, but felt relieved when seeing that all students from my advisor's group got their PhDs successfully. The biggest advice here is to choose an advisor who is helpful, and has a good record of getting their students graduated. 
My background is different from you. Almost all my family members and relatives received higher education, and there are a few PhDs and professors, so I too have a pressure to succeed. I was not made to do a PhD, and I was given a lot of insights on how doing a PhD would be like. You would think that I knew what to expect in a PhD program, but my experience was totally different from anyone else in my family. Basically, you will never know what you will encounter until you get into PhD yourself!
I totally agree with checking in with a therapist regularly. I don't have any mental illnesses myself, but I have a rather strong family history of depression, so I have been seeing a psychologist for the past 10 years. My psychologist is a PhD graduate herself. I went to her before I started my PhD for some advice. She asked me to reflect on what skills I have learnt over the course of my education, which would help with my PhD studies. That has helped me put things into perspective, so you can give it a go too. Although I was terribly stressed out during the write-up period, I am glad that I progressively got better by not doing anything related to my project for 2 months. Another advice would be to take regular breaks during your studies. I can't stress the importance of annual leaves. I made the mistake of writing my dissertation over the Christmas holiday, and I was backfired with a whole year of high stress!
Note: Some advisors are as mean as my advisor, who does not like students taking long breaks. He made me come in to do volunteer work while I was waiting for my defend, which I kindly refused. Of course, I had the support of my other advisor, who asked me to take a long break after finishing my PhD dissertation, and he would hopefully be my boss for the next few years (fingers crossed). Again, it is very important to choose the right advisor!   

Even though I am yet to defend my PhD, I have pretty much gone through the whole journey. I too saw and heard a lot of horror stories, like two of my friends started PhD with great passion, but then their research did not go well and they quit with a master. They are those who were very outstanding in undergrad. Another friend also had an eventful journey before he got his PhD. His marks were good enough to be accepted straight into PhD after undergrad, but he did not do well enough in the first semester that he was made to finish a master before reentering a PhD program. Somehow he chose the wrong advisor when he finished his master, and that professor was caught with academic misconduct. He had to switch to another advisor to finish his PhD dissertation. His defend was not any smoother either, in which he needed another 8 months for major revision. I was quite taken aback by these mishaps at first, but felt relieved when seeing that all students from my advisor's group got their PhDs successfully. The biggest advice here is to choose an advisor who is helpful, and has a good record of getting their students graduated. 
My background is different from you. Almost all my family members and relatives received higher education, and there are a few PhDs and professors, so I too have a pressure to succeed. I was not made to do a PhD, and I was given a lot of insights on how doing a PhD would be like. You would think that I knew what to expect in a PhD program, but my experience was totally different from anyone else in my family. Basically, you will never know what you will encounter until you get into PhD yourself!
I totally agree with checking in with a therapist regularly. I don't have any mental illnesses myself, but I have a rather strong family history of depression, so I have been seeing a psychologist for the past 10 years. My psychologist is a PhD graduate herself. I went to her before I started my PhD for some advice. She asked me to reflect on what skills I have learnt over the course of my education, which would help with my PhD studies. That has helped me put things into perspective, so you can give it a go too. Although I was terribly stressed out during the write-up period, I am glad that I progressively got better by not doing anything related to my project for 2 months. Another advice would be to take regular breaks during your studies. I can't stress the importance of annual leaves. I made the mistake of writing my dissertation over the Christmas holiday, and I was backfired with a whole year of high stress!
Note: Some advisors are as mean as my advisor, who does not like students taking long breaks. He made me come in to do volunteer work while I was waiting for my defend, which I kindly refused. Of course, I had the support of my other advisor, who asked me to take a long break after finishing my PhD dissertation, and he would hopefully be my boss for the next few years (fingers crossed). Again, it is very important to choose the right advisor!   

Everyone has given you good advice. I would like to add that:
(1) you should also take a supplement for vitamin D. It is a vitamin from the sunlight, and deficiency can lead to fatigue. It is easy to have insufficient of it when there is little sunlight. 
(2) you should also get a supplement for minerals, as deficiency in some can cause fatigue, e.g. iron. If you haven't, perhaps it is a good idea to check if you are anemic. 
Personally, I take Berocca, and then a supplement for vitamin D. 
(3) have a good plan on what needs to be done. When I am overwhelmed with a lot of things and don't know where to start, I simply lose motivation. 
Personally, I find it helpful to put everything aside when I feel that I cannot continue working. As it often happens to me at night, I usually take a hot shower and then have a good night sleep. I often find that I can work productively the next day. 
(4) you should evaluate your sleep hygiene. It is good to sleep for 8 hours, but quality is very important too. Do you tend to wake up multiple times at night, e.g. going to the toilet? If so, avoid caffeine, alcohol and too much water before bedtime. If you feel that you have had enough sleep, then avoid taking extra naps, as they can make you more tired and possibly interfere with your nighttime sleep. 
(5) if you have recently started new medication, then it is wise to talk to your doctor if it can cause fatigue. 

I live close to my university, but I would still prefer writing at home, as I just can't concentrate when there are people coming into and out of the office. To me, I listen to some relaxing music when I am writing. 

Although I have not had experience with a freelance editor but I have used online copy editing service. In my first semester, I was not confident about my document security. Still, I have to believe someone in order to get my work done on time. So I approached a service called papertrue  Their online chat assured me about my document security. So I did some research and read their privacy policy. When it comes to a service like this be sure to see their confidentiality condition as mentioned. If not I would suggest to look for some other service. 

Like everyone else said, you should definitely seek counselling to address your anxiety/depression. Often, depression causes one to lose motivation. I don't know why your parents think that you will never succeed in life without an MA. So many people didn't attend grad school and yet they are very successful. For the same token, going to grad school does not mean you must stay in academia. There are many other possibilities. It is this sort of thinking that causes a lot of stress. I used to think like that, and that's why I was so anxious.
Another thing, you should be in charge of your own life. Your parents cannot and should not decide on your life. Anyway, you have ended up in grad school, so my advice is to do your best and finish whatever you need to get your degree. 

Actually, the solution to ensure confidentially is obviously simple. I don't know why I can only think of it now! All I need to do is to delete all figures and tables in my result chapters when I send to her for copy-editing! After all, she cares about the grammar only and she does not need the figures and tables. No one can steal and claim my work with only the text and figure legends. It is also good to shrink the file size so I can send the whole dissertation in one document. 

My dissertation is getting to the copy-editing stage and I will submit soon. 

My dissertation is getting to the copy-editing stage and I will submit soon. 

If you've been tense for a year and a half and experiencing severe symptoms, you can't expect it all to magically go away in one day or even one week, especially if you're still in the same triggering environment. The best advice I can offer you is to keep doing what you're doing: stick to a routine, and allow yourself some down-time. A holiday, some shopping, that all sounds good. Regular exercise, cooking at home, doing some leisure activity -- whatever works for you -- are other useful things to do. Whenever I accomplish something big I give myself permission to take at least the rest of the day off, more if I can afford it, to do absolutely nothing related to work. It's also nice to celebrate, to have an official recognition of your achievement among friends. I hope you have someone who you can go to happy hour with to mark the occasion. And then, you find something else to focus your energy on. If you're waiting on anything (referee reports? starting a job?) but you can't do anything about it, it's usually helpful to divert the nervous waiting-energy to something else. Work or not, find something to do to keep yourself occupied; that will also help keep you from getting over-emotional. 
And congrats! It was a long road, I'm glad you made it. 

I can totally relate. Leaving home is always hard. I left home on the day I turned 18, and now I am 26. As you know, I submitted my PhD dissertation not longer ago. I had been feeling very anxious in the year leading to the write up, although I do not have any mental illnesses. What has been the most helpful is an understanding psychologist. She also did a PhD herself, so she can totally understand how difficult doing a PhD is. I second lemma's suggestion that you should set up a team of mental health professionals who can help you. Perhaps your current therapists can identify resources in the city you will be in. 
I also agree with fuzzylogician that you can find someone to live with you. If you get on well with your flatmates, then they are undoubtedly handy support. However, if you don't get on well, they are your additional source of stress. Personally, I lived alone in the very first year away from home for that reason. I only started having flatmates from the second year onwards. I generally got on well with my flatmates, but we did not become very good friends that can support each other like a family. I am not discouraging you, but reminding you that family cannot replace friends. If you decide to find flatmates to live with you, get on with them, but do not expect that they will be like your mum and siblings. 
All the best! 

I am sorry to hear about your family member and Celia's previous behaviour. Congrats on submitting though. I hope everything will work out for you and best wishes for the new year!

For what it's worth... I'm a copy editor and a grad student working on her own thesis and I can tell you - our work is often over-inflated in our own minds. I highly doubt  any copy editor is likely to even have the inclination to steal your work. Even if they did, to do so would be to risk their credibility and income. If this person is recommended by your university you can probably trust them.

You don't have to tell Belinda every detail of Alice's behaviour in order to achieve what juilletmercredi and I have suggested. There is no need to tell Belinda about the things Alice have said about Belinda, for example. That doesn't help anyone. In addition, if Belinda knows something about Alice's anger/dislike of them, they probably would not share it with you because it's not professional to do so. So it might not be necessarily true that Belinda has no idea what's going on.
But you can (and probably should) tell Belinda that 1) you are concerned that Alice will delay your graduation and/or 2) you are concerned that Alice and Celia will force you to spend too much time on their project and that you won't be able to devote time to Belinda's project and/or 3) you are concerned that working with Belinda before Step 3 happens will cause more tension between you and Alice. You decide what to tell Belinda and what help you need. But my advice would be to keep it to the facts between you and Alice and your concerns about Alice delaying your graduation and/or withholding strong reference letters for academic positions. You don't have to say what Alice thinks of Belinda. (Honestly if Alice is that openly hostile about Belinda to you, a student, Belinda probably can figure out that Alice doesn't like them). 

Grammarly's suggestions are also not always correct, so be careful with it. It does a good job, but it's not 100% 

My dissertation is getting to the copy-editing stage and I will submit soon. 

I am sorry to hear about your dad. It can be difficult to lose someone that is so important to you. It does take time to recover from grief, so don't beat yourself up if you need time to heal yourself. I lost my maternal grandpa 8 years ago. It didn't help when I needed to settle down in a foreign city at the time, so I did not get to see him the very last time and attended his funeral. Even today, I always feel sad whenever I recall him dying in pain. The thing that has helped me the most is to do a PhD on the disease that killed him. Even though I am very far away from finding new cures, I feel better when I can do something about the disease. 
Then, I lost my other grandpa unexpectedly last year. I am very shocked and sad, but the stress of completing my PhD somehow overrides the grief. My dad, however, has a hard time coping, but he does get better today, after a year. Probably that's why your doctor suggests a one-year break.
To me, the best way to cope with grief is distraction (i.e. keeping myself busy), but everyone is different. As others say, take one day at a time. Take care. 

Could you just say "[first author], [Prof A], and colleagues"? or if you're citing more than one work with varying authors, you might say "in a series of publications, Prof A, along with various colleagues, argues that blah".