Pump up your protein intake (but not too much)

Women need about 46 grams of protein a day (56 for men), and it's important to hit that goal if you want to keep your weight in check. Your body needs more time and energy to digest protein than fat or carbs, so you feel full for longer and also burn more calories absorbing the nutrients in the process.

That said, you don't want to OD on protein, either--if you have too much, the excess gets stored as fat.