While I haven't had a problem at any point with it, I have some friends who have and the only way for them was to stop altogether. One friend came to the realization when we were 16 or so, and he was getting violent. He said, "I don't want to turn into my parents" - and that was that.
Glad you are on top of it now.
It's awesome that he came to that conclusion at such a young age and also was able to act upon it!
Luckily, alcohol never turned me violent or anything, it just messed up my live for more than two decades without me really realizing it.