If you are disabled by whatever cause, and cannot work, then you can see a social worker (through the County or whatever agency handles disability and assistance in your area)and find out what to do next.
However, I'd strongly suggest thinking about this carefully before doing anything. If you ARE able to pull your own weight, you will feel MUCH better about yourself if you live by your own works, and not by assistance. But again, if you're not able, then that's what public (financial) help is all about. From the things you listed, you were dealt several disadvantages, but unless you have a mental or physical reason why you can't learn a skill, or apply that skill to a job, those things could be used as strengths rather than weaknesses. After all, if you've survived hardships like that, it should make you feel strong and confident. Those who grew up in "perfect" households, may likely have a tougher time in the business world, than someone who has had to sustain tough situations as a child and teen.
Charles