This is why the real answer to getting that new body you have always wanted and keeping that new body you have always wanted is to have a real change from within, from the self. You should start finding means that will increase your metabolism rate or fat burning. Remember if you try to lose weight desperately or too quickly through crash dieting, it will result in adverse result by entering into "starvation mode" where by the body will absorb and accumulate even more fats than it usually requires.
Many people fail to realize one thing: If you want to lose weight, you should observe what you are eating and change accordingly, but not to take in less food. This means that you will have to change your eating habits drastically, but it doesn't mean that you starve yourself of a lot of food. Eating six smaller meals of measured calories everyday can be good enough to stimulate metabolism in your body.