This is a topic that I think most of us struggle with. I too was alwasy told that I better finish what's on my plate or else. I grew up eating every single last morsel. To make things worse, I was NOT a picky eater so there was almost nothing left on my plate. The only exception was lima beans lol. But it took quite a while for my mind to ease into the thought of eating less. Even after I was sleeved and was done with my liquid phase, easing my way back into solids, I still didn't know how to just back off and caused a lot of unnecessary pain to myself. I am 4 months out now and what has helped me was to use the smaller saucers for my meals or smaller condiment bowls, and I also pre-measure my food. I know now that my tummy can't hold any more than 4 maybe 5 oz of anything at one time. So, I start out with that. If I'm having more than one item in a meal, I measure it so that the total on my plate is no more than that 4 or 5 ounces. I loathe the feeling of being overstuffed so once I start getting to the point where the next bite might be uncomfortable, I stop eating. I still don't just throw the food away, I simply put it in a small container for my next meal. It's an every day struggle and you contsantly have to think about it, but you'll get better. I just really had to ask my self, "is this last bite going to bring me more joy or pain..." and also if the decision will be condusive to my overall goal.