I also read a book recently that says it is a mistake to make food 'forbidden'. Once you can't have something, you are liable to want it more. Or, considering the number of foods that become off limits (chips, cookies, ice cream, etc.), you're more likely to eat all of those things in one sitting and binge since you haven't been allowing yourself any of it. I guess this is more of a word of caution if you feel yourself slipping.
When possible, I just try to get out of the house. Go for a walk or do anything else to get me away from the food, especially when it's just my mouth that wants food and I'm not even hungry.