It comes down quite simply to: calories in, versus calories out. If You expend more calories than You take in, You WILL lose weight.
One does not lose weight by exercise alone, or diet alone. It takes BOTH diet AND exercise. I'm not talking about going ON a diet, rather I'm talking about eating right and eating healthy AND exercise - making life style changes regarding exercise AND eating.
We all know what is healthy eating and as for exercise, walking is a good place to start. Walk a lot and then walk a lot more
Fit people make choices that keep them fit; fat people make choices that keep them fat: Discipline, Discipline, Discipline
Good Luck In Your Effort
If you really want to loose weight must start the morning cycling, proper diet, don't eat junk food. Start eating good amount of calorie food. Weight loss is not easy way but if you keep proper diet you will really get needful results.
There are also some wight losing products in market if you refer. But aware from those products which will harm you, and you will face very bad side effects from it. You must buy products from the best online chemist. Also read some weight loss articles you will find better ways to loose weight.