6The Beck Diet Solution is a way that you can lose weight and keep it off as well as realize that it's not your fault that you are overweight or that you have had trouble keeping the weight gone. A journal will help you see what foods you eat through the day so that you can make changes in your diet. You can also include information about the exercise that you get in during the week. It is a way for you to see your lifestyle without looking at numbers on a scale.