My advice for what it is worth is to see if you can go on welfare (citing all the jobs you've applied for), go to employment agencies and specialised disability employment agencies and look outside the square in respect with jobs.
My disability employment agency kept suggesting that I apply for labouring type positions. I always dismissed the option out of hand.
After many months my co-ordinator gently asked me why I was so dead against the suggestion. Was it because I thought it was not prestigious enough. I said, "Look I am 35. I am 5'8" and 65kgs (approx 145lbs). I have worked in white collar all my life. If they see me come in for a job they won't want me. They'll see I have a small build and have no experience and laugh their arses off. Even if I did get a labouring job I would last because I am not a kid anymore and I won't bounce back like an 18year old". She was floored. She assured me very strongly that there were companies screaming out for labourers and not only would be happy to employ me but would pretty much make any concession for my disabilities if I roved to be a reliable and honest worker. Nine months later, no complaints. I am not 65kgs anymore, I am now 75kgs and none of that is fat. I feel as fit and strong as I have ever been and enjoy my job. The employment lady was right, the boss's found that I was a really good worker and any time I have a concern, problem, need time off or whatever, their answer is "Sure Ross no worries - anything else we can help you with?". Twilight Zone!
Hope these ramblings help.