How to lose weight?

If you burn 500 more calories than you eat every day for a week, you should lose about 1-2 pounds.

If you want to lose weight faster, you'll need to eat less and exercise more.

For instance, if you take in 1,050 to 1,200 calories a day, and exercise for one hour per day, you could lose 3-5 pounds in the first week, or more if you weigh more than 250 pounds. It's very important not to cut calories any further -- that's dangerous.

Limiting salt and starches may also mean losing more weight at first -- but that's mostly fluids, not fat.

I need to lose weight

• Eat vegetables to help you feel full.
• Drink plenty of water.
• Get tempting foods out of your home.
• Stay busy -- you don't want to eat just because you're bored.
• Eat only from a plate, while seated at a table. No grazing in front of the 'fridge.
• Don't skip meals.

source: http://www.webmd.com/diet/features/lose-weight-fast-how-to-do-it-safely