Generally speaking, I've always kept clear of using any substances because I knew I was high risk for addiction due to severe trauma. I also LOATHE not being in control of my own body. However, I have dipped my toes into the pool a couple of times, mushrooms do nothing but pure MDMA allowed me to make a new association with sleeping.
Part of the trauma was getting attacked at night while I was asleep. Even as an adult I would wake in cold sweats, the MDMA reduced the severity so that I can sleep through most nights.