Seconds

Serve a proper portion of food at meals and then don't go back for seconds.

If you portion you foods, eat a balanced meal, you really don't need seconds, if you wait a few minutes you will realize you really are not hungry.

Your brain is because it is so good, do you know you could have it again at your next meal, or cook it again next week or next month. We have the availability to food, almost at will now adays.
We don't have to wait until the food comes into season, like we did as children, or even eat ground beef for 5 days out of 7. With chicken being that special treat on Sunday's Dinner.
Chicken only became cheap in the last 20 to 30 years, we don't stretch are proteins anymore.

So think about it you don't need to finish that pot up, you can store it, freeze it eat it later.

Cool the seconds.