If you're full or satisfied... STOP EATING!
I had dinner and that only put me slightly above 1200 cals so I thought I'd let myself have a treat. I got a sampler of 3 cheesecake slices from Walmart with the intention of having one tonight and saving the other 2 for someone or sometime else. But when I got home my eyes got bigger than my stomach and I was like "oh fuck it I'm gonna eat all 3 of them" So I load them all onto my plate, get comfortable with some Good Mythical Morning, eat a slice...
then I'm full.
So I put the other two back in the fridge.
Back before I started dieting, I would have kept eating even if I was full after only one. But I have learned that it is so so so important to listen to your body. Craving something but you know it's too high calorie? Eat just a little bit, and see if you're satisfied. You might realize that little bit was all you needed and stay in your deficit.