Even if you don't stop completely, and instead only drink socially as opposed to alone I think you'll feel a lot better. I know I did! Plus, the feeling of waking up every day 100% sober with no hangover is better than all the drunken nights. Whatever you choose, good luck...
I don't know you, but I understand how tough depression is. Just remember when things get bad that this stranger on the internet loves you. I want to see you happy and I'm sure you'll make it there :)