On those (hungry days) I suggest eating oatmeal, wheat bread, brown rice, white and black beans, broccoli, cauliflower, carrots, spinach, and salad. All these foods really fill you up and they will still give you energy. Also when you have a sweet tooth, try eating an apple, pear, or an orange with yogurt, this will satisfy you and help you feel guilty free! Try drinking powerade, zero calories and good for you, also they taste good. Only 99 cents each. Keep yourself occupied, talk on this site for help, read a good book, take a walk, watch a movie, anything to help keep you distracted. They helped me, hopefully they'll help you too!
And heres a hug for good luck!