If you take the diet people used "a billion years" ago, it is definitely easier to control your hunger/cravings. But that would mean giving up on sugar (yup, juices and most fruit included), all sorts of bread and grains, potato, chocolate, beer, etc - all foods that alter your body levels and make self-control a struggle in the likes of an ex-smoker entering a room full of people smoking their lungs off.

TL;DR version: eating the right things can help you stopping when you're full...