I was pretty much the same way your age along with my group of friends, I noticed that for us it was you either quit drugs completely, go deep into opiates and tranquilzers or moderate your use of the once in a while "party favor" drugs and continue doing drugs responsibly. I personally was never able to completely stop taking any drugs (weed is too good) but limiting my use of psys and mdma was the best thing I ever did for myself after using it excessively in my late teens. I was able to develop myself in my hobbies, school, etc to a point i hadnt thought i had in me before now that I had a new-gained focus. Good luck!
