Output greater than Input

When trying to lose weight, one must not consume more calories than one is burning. It is just common sense. In order to lose weight, you must make sure that you are willing to maintain a strenuous workout plan which will help you burn the calories. In other words, if you are going to eat that 800 calorie chocolate cheese cake, plan on spending a few more minutes in the gym.
Many people that are in great shape, can sometimes eat what they want, as they are consistently working out and burning calories during their workouts.
The fact that you had to change your diet should not be looked upon as being a bummer. You can eat what you want to eat just as long as you burn if off. Your workouts must be consistent and you must push yourself in order to see results.