If you eat poorly, those foods will not satiate and the "hunger" (it's not the hunger of a body starved of calories) persists. Eat for sustenance and the hunger you may feel will be different.

I also know that if I overeat, I have a strong urge to keep feeding (more chips, more pizza, more chipsahoy). Whereas when I eat a proper meal, I'm fine when the eating of that meal ends.