I did start over in a new career. I had been both a restaurant manager and an architectural CAD draftsman. Both were done with informal, on the job training, so I didn't have any degrees to back them up. Getting hired to do drafting again was a long shot, since I was a decade out of date on CAD software updates, as well as looking for work at the bottom of the housing market crash. Plus, the restaurant manager position was clearly going to be too physically stressful if I did end up back on dialysis again, so I wanted office work.
I started with an online version of the Meyer-Briggs personality tests. I got some great suggestions for careers based on my personality, and winnowed those down based on practicality. The top two choices for my personality were librarian and lawyer. Getting a job in a library during a recession is pretty much impossible. Law school tuition was insane.
Paralegals and other trained legal assistants, though, were one of the few careers that actually grew in number over the recession. I found a post-bach paralegal program that I could do at a business college in just over a year. I'm working part time as a court clerk now.
Your Ticket to Work network should be able to offer you some career counseling as well as some help with low-interest student loans and scholarships available only to people with disabilities. Oddly, they won't help if you just want some additional training - you need to do a full degree to get an loan help. (I asked if they could help me take Spanish classes so I would have another marketable skill - the answer was only if I wanted a degree in it.)
http://www.humanmetrics.com/index.htm#intro Here's a link to a basic personality test - it's a bit time consuming and odd, but the tips about best jobs can be useful. I never even thought about being a lawyer or working in the legal field until I took this - and I really, really love what I do.