Eating fewer calories will do it. It typically takes about three thousand calories less in your diet to lose a pound, as I recall.

Eating foods that fill you up but don't have a lot of calories will help. Carrot sticks, vegetables, fruits, whole grains. Staying away from oils and fats helps -- they are very dense in calories.

Using lower-calorie substitutes can help -- salad dressings, toppings for potatoes, gravies and sauces, dairy products... all have high-calorie versions and low-calorie versions.