It's difficult at this age when your partying with your homies and having a blast. It's hard to make the sacrifices that come along with letting booze go. I think if your truly serious about getting straight then you may have to either explain to your friends that you are done, and if the are unable to accept that then let those friends go.

Another thing that may help is getting on a different med that will help you. Most meds will make you very sick if you drink with them, so they will not only help with your depression but to keep you straight too.

Good Luck!!....Let us know what happens okay.