The past 2 Thursdays I've attended a meeting with my sister. They've been serving yummy looking cookies(one of my biggest downfalls) and pumpkin bread(another yummy love of mine). I used to always take food offered like that but I said no both times and just walked to my chair.
To me, that's a success in itself, turning away from a temptation that would normally grab me in.
Add up a bunch of those little successes and pretty soon it'll amount to a bigger success of another # gone.