When I was a teen I was addicted to drugs for 4 years in a row. I used ecstasy, crystal meth, and cocaine mainly, although there were various others here and there. I've been sober going on 4 years and still don't feel the same as I did before drugs.. I believe it was mainly the crystal meth, which was my last addiction before getting sober.. It zapped my ability to feel happy, and it killed my creativity. I have a hard time with connecting to others and understanding other people's feelings, where I used to be the most compassionate, understanding person and everyone used to come to me for support. I used to be very interested in things, especially gaming for fun, now all I can do it sit around all day because nothing holds my interest anymore..
I know some things probably can't be fixed.. but if there are supplements that will help repair brain damage, I'd love to be on them.