So far one of mine is going well: I resolved to stop buying pop, as I used to buy at least a bottle a day. I still drink it when it's available to me for free (at parties, a friends house, etc.), as cutting it off completely would be more likely to end in failure (maybe if I can make it this year without buying it, I'll make it next year without drinking it). The one exception I have every week is Taco Tuesday, the free taco bar with drink purchase at a place on campus. I guess there I'm technically buying pop, but I kind of see it as buying tacos and getting pop free. Cheating? Maybe. But so far that's been my only exception.
The working out more and watching less TV hasn't panned out quite as well, unfortunately. There's improvement over last year, but not as much as I'd like.