That's funny man, very similar story actually. I was at college, penultimate semester, and it was Thanksgiving vacation. I lived about 2 hours from the college, so during the week I had a little apartment right next to the campus, and I would go home on weekends. My wife ended up getting quite sick, and this was right before finals, so I decided to just stay at school and study. I ended up just getting absolutely wasted every single day, like 6 or 7 days in a row. On the last day of Nov, my entire body just ached... and my upper back on both sides was throbbing. It was the first time in my life where I could physically feel the effects of my drinking, and it was just a sign to me that if I didn't stop immediately, then my health would be in jeopardy. I kind of just figured I wouldn't drink anymore until after finals, but after a few weeks, I just felt better and more positive. I didn't even drink during christmas, new years, and by then it was over a month... it was finally the right time in my life to just stop being an idiot.
You made a really good point about "not enjoying drinking anymore." I had finally come to the same realization as well. Good shit buddy!