I'll add my experience to this, I was just 36 when I went on disability. It was something I was very much against, but my doctor and family agreed it was time. I'm very thankful my doctor recommended I get a disability lawyer the first time out, with his help, I was accepted in my first try. Even if it is your first claim, the process still takes a long time. I still received back pay which more than covered the lawyer. Everything matters on the application, the wording of responses to questions is very important, and the lawyer helps with that, among many other things.