For me, if it's not around me, I can't eat it. The key is to only have the things in your house that you should be eating. But make sure to keep your house stocked with those items, because if you look and the meal isn't there, especially in my case, it leads to a quick run to a fast food place.
Speaking of keeping things in the house that shouldn't be here... we had a party last night, so I'm going to go eat butter cookies, popcorn, and fruitcake.