Hey badger. I think a lot of my dependency has a lot to do with social anxiety and general moodiness. But exercising later in the day is good advice -- I find that after I swim laps at the gym I generally can't be bothered. I shall give this a try!
Regarding attending some sort of support group, well, I'm pretty sure I wouldn't have the balls to show up to that sort of thing without having a glass of wine first, which pretty much defeats the purpose.
Thanks for the response. You're okay for a Hufflepuff. :)