Hi, i too am pretty young, just turned 23. My main issue Has been with narcotics although my teen years up till about your age i had very similar drinking issues. Alcohol was never much of a crutch for me rather than a substitute when i couldnt get my DOC. Like others have said it's great that youre young and noticing a problem already. What i and many others have found that to be clean and enjoy it while being comfortable in your own skin it takes moee han just quitting. You need to find a hobby/skill that is important and worth staying sober for. Something to pride yourself on, so when everyone is out drinking youre happy with yourself for staying in and not drinking. To me exercise is unmatched with this, although everyone doesnt like heavy goal orientated exercising, so something similar could work just as well. Find an outlet what do you like to do?
Goodluck man, if youre here you got the ability to change. Read here everyday, that has helped me along the way greatly.