MUSHROOMS!
something else that helped me that seems small but its burned into my mind was writing down on a piece of paper on 1 side "the person i want to be" and on the other side "the way i am behaving"
i used to have issues with opiates and alcohol, mushrooms have really helped me think a bit more deeply/differently about the way i behave and why which in turn gives me a bit more breathing room to make choices based on how im thinking rather than being so emotional and fucking myself up to deal with it, for someone like myself the biggest thing is to try and stay neutral, not to get overly excited when things are good and not to get maniacally depressed if shit isnt working out , im not saying be a robot just let the emotions take a bit of a back seat to the thinking brain...
so i agree with sagi, microdose mushrooms (sub perceptual dose) and i would also just like to say quitting anything cold turkey can be dangerous, my mum recently tried to go cold turkey on her valiums and we almost took a trip to the hospital cos her blood pressure went through the roof... plz be careful, i hope this helps somehow..