Money is one of the greatest incentives around. You only have to look at AngelList to see that. And the only bigger incentive than money itself is losing it. GoFuckingDoIt.com uses this idea. It's a productivity tool that makes people reach their goals by charging them if they don't.
People set a goal, deadline, price and a supervisor to check if they've actually reached their goal. When the deadline is reached and the supervisor states they haven't, their card is charged with an amount they can set from $5 up to $1,000.
In the first two weeks since launch in May 2014, over 350 people have pledged almost $30,000 to reach their goals. People have set goals from quitting smoking to running a marathon to asking out the girl they've been in love with but didn't dare to.
If someone fails, the charge goes directly to the site itself and not a third-party, creating an instant revenue model.