People tend to over eat when they are distracted.  Instead of sitting in front of the TV to eat, sit (or stand) in a quiet place and focus completely on enjoying your meal.  Don’t rush your meal…enjoy every bite.  Your body will have an easier time digesting the food if you take small bites and chew well.  When you feel like you are full, stop eating.  You do not have to finish if your body is telling you otherwise.  Put the left overs in the refrigerator and enjoy it later.