Actually, a better answer is to pile the vegetables up on your plate as high as possible. Make sure your tummy is full to bursting with veggies. That ought to take care of at least some of the munchies and most vegetables contain hardly any calories at all, except for beans (not green beans, they're okay) and peas.

Also, there are low calorie snacks. Do you have something called snack a jacks where you live? It's low fat, reasonably low calorie and it tastes a lot like potato chips.

Lastly, reward yourself for being strong with a nice and totally unhealthy snack only once a week. You'll find it tastes much better if you don't eat it all the time.