I'm sorry you're in this hole. I don't have a good suggestion for you, other than stuff you've already heard. Mainly, I want to say I think I know how you feel. I'm feeling much like you're describing, except I don't believe I'm as far down as you are. But, even at the stage I'm at, it's awful.

I'm becoming afraid. I think you get to a point where you can't seem to help yourself. Then there doesn't seem to be anyone to intervene. It's awful.