I have similar problems, with isolation and loneliness. Most of mine is probably self-inflicted though. I've turned into a hermit after my teenage years, and am pretty estranged from the family I do have left, so I can definitely say I understand how difficult it is to try and tackle all your problems and stress when you only have yourself to rely on for support. Why do you think there are so many support groups out there? Because it IS extremely hard to go through anything tough when you feel isolated from sources of support. Unfortunately, you're not going to be able to avoid those times in your life. I've always gotten through the things I've faced by telling myself that no matter how things turn out, even if no one comes to my rescue, I'll be stronger after this.

Even if you feel like you're not receiving support, don't gice up on YOURSELF. Because that's what all this struggling Is for, you. Congratulate yourself for every day you get up and keep trying. In times of desperation, think back on other low, or very difficult parts of your life and realize if you made it through this, or that, that you'you're going to make it through whatever you're going through right now. Let me know if you need someone to listen or anything! Sometimes being supportive will help as much as being supported =]

The only thing I can stress is don't give up. Tomorrow is always a new day. I hope you start feeling better soon, and find yourself in a better position to tackle quitting.