Matt Cutts, Google developer, spoke at the Google I/O 2011: Ignite conference. I liked his idea in fact I think I've done this a few times now. You might remember French Fry Free February or more recently No Soda April. He closed with the following quote: "The next 30 are going to pass no matter what, I guarantee it, so why not pick something you have always wanted to try and give it a shot for the next 30 days?"
What will be your next 30 Day Challenge?