I can totally feel what you're going through. I struggled with severe depression when I was younger (and still do from time to time). I've found that the more I got into music though, the more stable I felt. The location thing was a real bug for me...especially after losing Nina. I felt like I had nothing left except to leave the only place I had ever lived. Leaving was a good thing though, my brain is getting more centered although Ill admit it isn't easy lol. I still feel homesick and that I have a feeling will be a bit of a sore spot for a while.
The real thing is finding your center...finding what does make you happy. Thinking about even the smallest things that are good about each day is what gets me through times when I think I'm completely insane.

I don't know if much of my rambling makes sense (as I haven't gone to sleep yet...yay new years ) but if you need someone to chat with don't hesitate to IM me or send a PM. I'm here for you *HUGS!*