Whats behind overeating, controlled eating, in fact any obsessive, compulsive crazy behaviour we do in the name of momentarily feeling better. Yep we want to feel better! The strange thing is we still believe we aren't big enough to manage the pain that came about when we were too small to do anything about it. The hunger we try and satisfy needs acknowledgement not pizza.
Successful action comes from developing your backbone not your wish bone.
Have a great day