I saw this article in a magazine I was reading-

 I am going to think about this when I find myself wandering aimlessly in my kitchen

Overeaters Anonymous has a saying known as HALT.

It reminds you to ask yourself if you are Hungry, Angry, Lonely, or Tired before you eat.

 If it's simply hunger, eat something!
If not, however, work on addressing what's really going on with you.