1. Identify your target weight. Aside from any Hollywood standard, what is your ideal weight? If you need to lose 25 pounds total, then set a weekly goal that will help you reach that ideal weight over time. The healthy habits you adopt should become permanent, to help keep the weight from returning.
2. Start a work out routine. Find something you like in a conducive environment and do it at least three times a week. No matter how much you cut calories, you are not really going to burn fat and drop the weight you want without serious regular exercise.