Unfortunately, you can't continue eating huge bowls of ice cream after dinner and expect to see the scale numbers drop. In order to encourage a change in your weight, you need to make healthier lifestyle changes that include eating nutritious, balanced meals most of the time, with the occasional splurge. Remember, you're not just dieting — you're changing your eating habits. That's the principle behind the 80/20 rule. Jessica Alba's trainer, Yumi Lee, says, "You can't be 100 percent all of the time, but you can be 80 percent all of the time."