If you starve yourself what happens is that you get what you think are immediate results.  With 36 to 48 hours you begin to see the numbers tumble on your scale.  Here is the problem with that, and believe me I know because I tried it a few times:  your body begins to go into survival mode.  It starts to store sugar that would normally be broken down by the body.  What you are losing is water content and not weight that will stay off.   Eventually you will hit a plateau and stop losing.  You will feel weak, faint, and sick.  You will eat something and the weight will come right back.  The only way to lose the weight is to have small portions of food, exercise, write down what you eat, so there is no denial, and so that you will know what your calorie intake numbers are,; and you can keep them at a specific level that is right for your frame and your height.