There are so many kinds of diets out there, some work better and some don't work at all. But even those that work don't help you keep your new weigh for long. And even more important - Not all of these diets are healthy.
If you want to
Your goal should be to
1. If you weigh more - the more fat you would burn.
2. The better your physical condition - the faster you'll burn fat.
3. If you won't consume any carbohydrates - you will have a harder time to burn your fat.
4. If you are doing any aerobics activity then your fat will get burned the fastest.
Remember - if you'll loss more than 500 calories a day - That's 3500 calories a week, a bit over a pound. If you loss more than that then you are losing muscles, liquids and more essential ingredients.
It's a slow process but you will see results for the long run.
Your daily menu
The right diet menu is the one that includes 55%-60% carbohydrates, 15% proteins and up to 30% fat from your daily calories needs. If you are an athlete you should increase the amount of proteins. If you suffer from diabetes then you need to make some personal adjustments.
Most of the problems begin when you eat a lot of carbohydrates in a very short time - your body can't handle that many carbohydrates and it turns them into fat. That's why you should eat more meals a day but make each one smaller. It is also preferred to eat healthier carbohydrates like whole-wheat flour and unprocessed cereal. A rule of thumb here can be to try and eat natural food or at least foods that are closer to nature.
Another thing to remember is that our body contains 60% of water. If you eat fewer carbohydrates then your body observes less water and you think that you are losing fat when you are actually losing water.
I truly believe that anyone can succeed in losing weight - it is just a matter of strong will and choosing the right diet for you.