Watch what you eat. You have to. Nutrition is where it's at and until you realize this, it's going to constantly be an uphill battle. If you feel guilty eating something, then don't eat it. Use your head because it's not that hard. Avoid the foods that you know you should avoid and watch how much sugar you take in. But have one day that you eat whatever you want because otherwise you'll go crazy.

There are also supplements you can take like CLA, Green Tea extract and thermogenic products. Supplements aren't the magic solution but adding them to a program that contains exercise and good nutrition can be very effective.

A leading health magazine I read also recommends:

1. Drink protein shakes throughout the day (yes, females too) because it will help prevent overeating. Plus, protein is important. Two shakes is good.
2. Get 7-9 hours of sleep to keep your body in top condition.
3. Add whole grains to your diet, like oatmeal and brown rice, because of the fiber they provide.