In the International Journal of Obesity study, people who lost weight and kept it off actually visualized--and realized they could accomplish--their fat-loss goals. In order to lose weight, you have to believe that you can make it happen.
Many women set near-impossible goals, which can set them up for failure and disappointment. So set your sights on an attainable amount of weight and a sensible time frame. Aim for 1 to 2 pounds per week, max!