I think it's much more common than what you may think. I've passed through a similar phase when I was at the university long ago, too much partying, alcohol an

I think it's much more common than what you may think. I've passed through a similar phase when I was at the university long ago, too much partying, alcohol and lots of junk food. Drink water and try to exercise and achieve small goals (say, add two or five more minutes of running for session each week) and involve in another type of activities to give you some relief from stress without trashing your body. Also, talk to other people/real friends about how you feel or seek counseling.