Hey man, I am 26 and was pretty similar to that when I was in college. I somehow managed habits like that and I both graduated and earned four varsity letters in sports. Dont let the fact that you have managed to almost graduate and have had moderate success pull you back into drinking again. Odds are if you think you have a problem you do. I did but I talked myself out of it so many times. Moving home is a good idea. Keep up the good work and remember real friends wont care if you are drinking or not. Odds are some of them know you have a problem.