A. J. Jacobs spent a year following every rule in the Bible. He even asked people for permission to stone them. The experience had some good effects too:
I'm not Ghandi or Angelina Jolie, but I made some strides. The experience changed me in big ways and small ways. There’s a lot about gratefulness in the Bible, and I would say I’m more thankful. I focus on the hundred little things that go right in a day, instead of the three or four things that go wrong. And I love the Sabbath. There’s something I really like about a forced day of rest. Also, during the experiment I wore a lot of white clothes, because Ecclesiastes says let your garments always be white, and I loved it, so I look like Tom Wolfe now. Wearing white just made me happier. I couldn’t be in a bad mood walking down the street looking like I was about to play in the semifinals at Wimbledon. One thing I learned is that the outside affects the inside, your behavior shapes your thoughts. I also really liked what one of my spiritual advisers said, which was that you can view life as a series of rights and entitlements, or a series of responsibilities. I like seeing my life as a series of responsibilities. It’s sort of, "Ask not what God can do for you, ask what you can do for God."