SSDI after 100% P&T?

70% ptsd, high blood pressure, heart disease, diabetes, documented shoulder an arm injuries, and a few other things

I just finished a rehab Program for substance abuse (alcohol) and I honestly don’t know if I can stand going back to work for long.

Almost 60, so thinking of leaving the job and submitting for SSDI. Just wondering what the odds are that they will say yes? Any guesses based on experience?