I have quite a bit of experience with psychedelics and MDMA, etc. type stuff myself. The good thing, (and this is my personal opinion only) is most of the stuff in that class isn't terribly addictive. It is however *really* really* bad for you.
Haven't touched most of that stuff in a while, but like you, drinking has become my nemesis. There are a couple good common sayings that might apply to you. One being that if you think you might be an alcoholic, you probably are.
I'd recommend checking out the forums and what many other people have posted. See if any of that resonates with you. You've come to a good place for support and answers.