I found a website to help you get an incentive to lose weight. It's called dietbetter.com. I heard about it on the Today show website. You join or start games by betting a certain amount of money that you'll lose 4% of your body weight in 4 weeks or 10% in 6 months. The bets start as low as $10 and go up to over $100! I joined a game on April 1st with a bet of $25 that I will lose 4% in 4 weeks. So far I've lost just over 5lbs since April 1st. and i have about 1.8 lbs to go until April 29th. (which i know i can lose!) If you meet your goals you win a portion of the pot! It's a great way to make yourself accountable for losing weight and get rewarded for your efforts too!

I am also doing a dietbet. I am doing three right now. I think two of mine end on the 29th. This is my first dietbet and I have lost more than the 4%. Good luck!

How do people prove they've lost the weight?

It explains it all on the website. You have to submit a photo of you at the very beginning with you on the scale and a picture of the scale with your weight. Then at the end you do the same thing. Its not fool proof but most people are gonna be honest about it.