Track your food, everything you eat. When you see how much fat & calories are in your comfort foods, you will start to find better alternatives. I know I can eat a piece of cake, but then I've used up all or most of my calorie allotment. And then I'm hungry all day ~ not good. The lower the calories the more you can eat & you will feel fuller longer.
Really, I believe that the calorie tracking is the key to everything.