If you are constantly thinking about food, maybe start reading a book about food to help point you in a healthy way of looking at it. At least you would have some new information. I hear The Omnivore's Dilemma is great. I am reading In Defense of Food which explains just how big a hand government has in what we put into our mouths and how we started out in the right direction, but things have just gotten progressively crazier about what is acceptable to eat and what we are seeing less and less of in the stores and how we can start to turn that around.
If you are constantly thinking about food, maybe indulge yourself in some foods that have little to no calories, like cut up cucumbers, celery, salad. I like to have a bowl of popcorn lying around all the time. I always end up getting sick of eating that. It will usually satisfy me until I can eat something a little more nutritionally dense.