For me, what helps is eating slower digesting foods. Nuts, brown rice, oatmeal and lots of protein. If I happen to eat a higher carb meal because I'm rushing I have a very hard time controlling hunger. I find "kind" brand bars are a pretty falling snack, oatmeal or egg whites, 1/4 cup of nuts etc, can be pretty filling without too many calories. Greens are pretty good too, basically anything high fiber or high protein will be filling and last a while.