How do you successfully get accepted for permanent disability with adhd?

Hi all, I have recently discovered & have been diagnosed with ADHD & CPTSD. Lived most of my life misdiagnosed & completely struggled through life with low self esteem because I thought there was something "wrong" with me. I'm happy to have the correct diagnosis but it doesn't help me one bit with my workplace. I have been treated terribly by my manager for my mistakes, my emotions, etc. I recently experienced complete burnout & was out of work on temporary disability. I am in therapy twice a week, sometimes 3. During my time out, I was feeling better & making progress but all of my progress seems to have disappeared as I have returned to work. I am struggling terribly, what are my chances of getting accepted for permanent disability? Anyone gone through this? Thanks in advance everyone!