20,000 people say you’ll be happier if you take more chances

Last year, Steven Levitt (best known for his book Freakonomics) conducted an interesting test. He set up a website for people that were considering making a major change in their life, such as quitting a job or ending a relationship, and the website flipped a coin for them — heads they make the change, tails they keep things the same. 20,000 people gave it a try.