Lunch Portions

So I go home at lunch everyday and just pig out and don't even get full. Why? I know I do it after the fact, like now I am looking and I had 960 cal at lunch, here is what I had, fat free cool whip, too much, 3 servings of ritz crackers, low fat chili, a slice of cheese, and a cup of milk. 500 of those calories was junk; cheese, cool whip, and too many crackers. Ugh!!!!!!!!! I am in this habit everyday and now I see it on paper the junk. Must stop- I have to go home but the mindless eating only happens at lunch, I don't really do this much in the evenings. So now I have to eat a really light dinner and work out. Can I do it? Find out later!