Consider whether you're really hungry.

Whenever you feel like eating, look for physical signs of hunger, suggests Michelle May, MD, author of Am I Hungry?

"Hunger is your body's way of telling you that you need fuel, so when a craving doesn't come from hunger, eating will never satisfy it," she says.

When you're done eating, you should feel better -- not stuffed, bloated, or tired.

"Your stomach is only the size of your fist, so it takes just a handful of food to fill it comfortably," says May.

Keeping your portions reasonable will help you get more in touch with your feelings of hunger and fullness.