answer:You have to deprive yourself of the goodies for a few weeks, and then you will shrink your stomach and get out of the habit. Not completely deprive yourself, I don’t mean never have a sweet all week, but not as a regular part of your day. Plan your meals, make sure you eat regularly so you don’t get so hungry you grab anything fast and easy. It sucks once you have learned to overeat. When I was young the idea of eating an extra bite made me feel sick to my stomach. Once I learned to eat past the point of being full, I was forever able to do it, to overstuff myself. But, I do go for months sometimes where I eat very healthy and lose my desire to eat huge portions. Those months don’t happen on their own, I have to kick start them by just forcing myself to be good.