And yet practicing can also be applied to eating successfully. I successfully managed my weight for decades with chronic restrained eating. It became unconscious second nature and I did not feel deprived. I simply did not take second helpings and passed on things I knew were not good for me. It's not a whole lot different than adopting a paleo diet, either. This, too, requires willpower and a certain degree of fore-planning. The food itself may be more satiating but it takes a degree of willpower not to eat poorly in many situations and takes a great deal of PFC action to make good choices up-front, especially in our culture. Try attending a potluck sometime and see if your willpower muscle gets a little usage.

"In other words, we shouldn’t have to be hungry all the time in order to stay healthy and fit."

I'm still trying to reconcile my desire for that to be true while I'm trying to lose weight with my personal experience that I have to feel some hunger all the time to actually lose weight.