An easy way to cut calories from a meal or snack is to cut back on what you're adding to it. A cheesy pizza is still a cheesy pizza with less cheese or low-fat cheese, and a decadent birthday cake is still a wonderful sweet snack when made with egg whites instead of full eggs and low fat margarine instead of butter, but the amount of calories in each of those can vary greatly.
When trying to lose weight it is important to avoid or cut down on alcohol. Drinking beer and other alcoholic beverages adds empty calories that add to weight gain and make it harder to lose weight. It is better to take in calories with nutrients than drink alcohol with useless calories when trying to lose weight.
When you are trying to lose weight, keep a container of walnuts close by to help keep you from feeling hungry. Research shows that walnuts produce an effect in the body causing a person to not feel hungry again for a substantial period of time. Walnuts also make a great snack.