Starsounds

I have a huge passion for what I am pursuing however, the past few years have been both beneficial and depressing. I went to grad knowing that I would have to get accustomed to being in solitude for weeks at a time. I love what I'm doing and I've been doing it since I was a child. At my undergrad I was full of energy but when I arrived to grad school all of that changed. I can't help but feel confused as to why I feel this way. Everything is going as planned, I'm here on full scholarship. Perhaps it really is the loneliness and the pressure of having to come up with research. All I know is that I feel lost. I feel disconnected in a way from the rest of the world. When I hangout with old friends from undergrad it's awkward. Even when I meet friendly new people, I can't seem to assimilate. I know I shouldn't feel this way. Everything "career-wise" is going fine. I just don't quite understand what is happening to me personality wise. I know people change. Anyways, What I am asking is… Have any of you been through a similar experience before graduation. Please feel free to comment. I would love to have some input. I hope I'm not the only one out there that feels this way. Thank You