Determine your daily calorie intake . Losing weight is simply a matter of expending more calories than you take in, through exercise and your daily activities. To win the battle, it helps to know how many calories you are consuming in a day.

Write down all the things you eat on a typical day. Carry a small notebook with you and write down every snack, every drink, and the contents of every meal. There are also great websites that you can use to keep track of calories, get recipes, and help achieve your goal. Don't forget to include the pats of butter or the spoonful of sugar in your coffee. It's best to do this for at least a couple weekdays and a weekend; it's even better if you can go a full week. There are also calorie tracking websites that can help you to do this, for example the US government website, My Pyramid Tracker.

Do an itemized calorie count. When possible, write down the number of calories in each thing you eat as you eat it. Keep in mind that the recommended serving size is often considerably smaller than the serving you actually eat. Look up the calorie count on the internet for foods that don't have calories listed on the container or for fast food meals. You don't have to be 100% accurate, but you do want a good estimate of the number of calories you're taking in. There is an idea that multiplying your own weight by ten will produce a rough estimate of the number of calories you need to eat per day to maintain your weight. This is NOT true, you may wind up grossly under (or perhaps over) estimating the number of calories you should be eating. Use a scientific or health website to determine the number of calories you should eat a day or consult your doctor. Everyone has different metabolisms and there is no blanket rule that covers everyone's recommended calorie intake. Reducing 500 calories per day from the calories you eat to maintain your weight can help you lose a pound of fat per week.

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