Have you tried working somewhere besides retail?
Maybe retail makes you suicidal, not work itself... Just a thought, because I've struggled with working too, but only certain types of jobs have me in a mental tailspin in no time...
Your life is in your hands, its up to you to take ownership of it. Therapists don't get to decide if we're allowed to have kids or a normal life. Unfortunately, disability isn't part of a "normal" life and the only way you can help it along is to keep failing at jobs until doctors agree with you.
I hope you start feeling better soon