hi specialdarkness, it sounds like you've got a lot of burdens to bear right now.
The thing is, (and this may sound harsh) you really, really can't. It's a little like asking someone with the flu to look after other flu patients as well. Yes, you may be able to help them, but definitely not as well as you could if you were well, and you are never going to heal if you don't get some rest too. I understand that these friends are in need of help -- it looks to me like they're all in very serious trouble themselves -- but if you think about it for a moment, what good are you to them in the state you're in now, especially if you end up collapsing under the weight of their problems because you've been unable to deal with your own?
It sounds to me like these people need professional care. The best thing you can do for them right now is direct them to that kind of care. As far as I know, you're not a professional, and you yourself are sick too! All that's going to happen is you are going to be dragged down to a place where you won't be of any help to anyone. I don't mean to sound harsh, and I don't mean you should abandon your friends -- it's great that you're there for them and they're lucky to have you! -- but maybe their need for help has gone beyond your capacity to help them just now. Maybe it's time to start directing them to the professionals?
Take good care of yourself. After all you've been doing for these people, you deserve it!