I'm an ex power lifter and I can guarantee you weight loss.
First of all, do not diet. It does not work.
-Eat 3 main meal with snacks in between.
- Max your protein. Egg white's, some nuts and eat complex carbs.
- Snack on Banana's and apples in between meals.
-drink 2 litres of water.
- get an exercise routine that combines weights with a little aerobic exercise.
Though I am not a power lifter by any means winkingmunda I have tried and tested a few things and found the following to work. Some of it will overlap what Randip veer ji said.
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Cut out starch carbs ..i.e. pasta, bread.. and replace it with more vegetable based diet.. Only have starch foods on the day you exercise (knows as carb cycling)
Steam,stir fry your food.. basically look at your cooking methods..keep it simple as possible.
**Do not eat late..**
Fruits like bananas contain a lot of sugar.. reduce the fruit intake.. this includes all fruit juices.
Try doing exercises like rowing which involves than one body part so you are burning more calories..
Remember there is no such thing as spot reduction.. stomach is last place on your body where the fat will be burnt from and its the first place where its stored..