cheesecafe

This is from personal experience, so take it with a grain of salt as what works for me might not work for you.
As you probably figured out from being in school and reading all the posts on this forum, grad school is stressful and requires a huge time commitment (I'm in my second year). A professor of mine said there are 2 extreme types of grad students:
1) The one who wants to be involved in every extracurricular and social activity, both inside and outside school (and ends up not having time to do their research) 
2) The one who isolates themselves completely to truly focus on their research and never knew there was a world outside their lab (and burns out very easily)
Both are not the best way to approach school.
Personally, I try and be smart about what I do "outside the lab." Besides the more "expected" things like attending talks and colloquia, I try to only generally get myself in activities that / where:
1) I feel is a good investment in terms of time and career
2) I feel I can make an actual contribution in, and not one where I show up because everybody else shows up (just because it works for others doesn't mean it works for you!)
3) If within the academy, my supervisor knows about and "approves." (it is extra, extra stressful if your supervisor is constantly berating you about the "useless" work outside the lab that you are doing)
4) If outside the academy, only things I am truly invested in. This can take different forms for everyone. Like some invest themselves in a cause they really care about (e.g., women's rights), or things they find helps them regroup and return to the lab refreshed every week (e.g., yoga).
Currently, I serve on one university committee that is broader than my direct and immediate area of research (i.e., I work in Neuroscience, and I serve on a committee that serves the whole Faculty of Medicine) and do outreach / workshops relating to that, I mentor students in my area / field, and I "intern" every couple of weeks at a research institute that is also broader than my area of research. I also volunteer at a local community health care centre outside school. They all take time, but not so much that I become the grad student who is never in the lab missing deadlines and/or is always being reminded to do her work.
The first two are service to the profession and academic community, the third is just for my own professional development, while the fourth is for my own personal fulfillment.
I found it takes time to figure out what you are passionate about, and how you think you can nurture that passion while still taking care of yourself. The key is to not burn out (very hard to do!). And that starts with thinking about the direction of your future career and/or life goals and then picking your battles.
I (think) am like you. I was involved in several simultaneous activities and events as an undergrad, both inside and outside school. But grad school is no longer about being that queen / king social butterfly. It is more about (for me, anyway) learning how to be a colleague, peer, mentor, professional, and learning how to give back to the next generation and what you want (or think you want) your future life to look like. And I personally think that holds true whether you decide to go into academia or not.
FWIW, nobody expects you to do it all. And it is okay to change your mind when you realise it isn't working and/or that you are spreading yourself too thinly. Also, as I learned recently, having a mentor, friend, and a network like this forum who has/have gone through the process to give you perspective about expectations, norms, and reality helps tremendously.
Give yourself some time to figure it out. Grad school, and life, are marathons (triathlon, really). You don't want to sprint like mad in the beginning and realise you can't move after a short while. (Orange turtle r.e.a.l.l.y. needs to remind herself about this constantly as well)
Good luck!

I use the Health and Psychosocial Instruments (HaPI) database. If your institution has a subscription, it's an easy way to find links to the original instrument and validation paper. 
https://www.ebscohost.com/academic/health-and-psychosocial-instruments-hapi

I sincerely hope everyone managed to get into their top choices, or at the very least into one of the choices they had targeted at the start of the process. But sadly I do know that some many not have got in this cycle. If there is any way we (those who did manage to get a call this time) can help, with suggestions or any sort of guidance, please feel free to ask! Admissions are an uncertain business and sometimes the really deserving also stand ignored. Good luck to all who got in and even better luck to those applying for 2018!

This is a frustrating situation! Have you tried emailing them a second time as a reminder? I've sent follow-up emails along the lines of "I know you're probably very busy but I would really appreciate knowing whether you will be taking a student since the application is due soon." In general, I've received replies to my second inquiry quickly.  
I work with a graduate student who advised me to be wary of professors who are non-responsive over email as it may be a red flag to how they work with their students. I would take that advice with a grain of salt... but I would definitely be hesitant to apply to a program where I never heard back from a professor. 

This is a frustrating situation! Have you tried emailing them a second time as a reminder? I've sent follow-up emails along the lines of "I know you're probably very busy but I would really appreciate knowing whether you will be taking a student since the application is due soon." In general, I've received replies to my second inquiry quickly.  
I work with a graduate student who advised me to be wary of professors who are non-responsive over email as it may be a red flag to how they work with their students. I would take that advice with a grain of salt... but I would definitely be hesitant to apply to a program where I never heard back from a professor. 

This is a frustrating situation! Have you tried emailing them a second time as a reminder? I've sent follow-up emails along the lines of "I know you're probably very busy but I would really appreciate knowing whether you will be taking a student since the application is due soon." In general, I've received replies to my second inquiry quickly.  
I work with a graduate student who advised me to be wary of professors who are non-responsive over email as it may be a red flag to how they work with their students. I would take that advice with a grain of salt... but I would definitely be hesitant to apply to a program where I never heard back from a professor.