How horrible. Anyone would be depressed. I agree with Yoda, try to get SSDI, or some other help.

When you are feeling better, brainstorm ways you might be able to work from home. Maybe medical transcription or something. No one will hire me, so I have to be self employed. It used to suck because I had no benefits, but with ObamaCare, it's made insurance affordable even for people like me.
Since I'm currently not paying into social security or a 401k, I make myself set aside a small amount of money aside each week for the future.

I'm not rich, but what else can I do?

Hang in there and most of all don't give up.