As a naturally thin person, you eat exactly as much food as you need to satisfy your hunger, and not a bite more. Because you are paying close attention to the process of eating, you notice how your hunger diminishes a little with each mouthful. You notice when your body has stopped sending hunger signals, and you aware that this moment occurs before it starts sending fullness signals. You are aware that you are satisfied well before your belt starts feeling tight, well before you feel heavy, dull or sleepy from having overeaten. br Most importantly, when you notice that you are no longer feeling hungry, you stop eating. You have learned to dislike the sensation of being full as much as you like the pleasure of eating. Knowing that you're not going to like the way you feel afterward, you resist the temptation to keep eating just because it tastes good. While in the long run, you know that overeating will make you fat, your more immediate motivation is simply not to feel stuffed. You stop eating because you don't want to feel that way.