The document outlines a 5-step 30 Day Challenge process for making and sustaining change: 1) Set a goal, 2) Prepare, 3) Tell others, 4) Begin the challenge on day 1, 5) Celebrate completing the challenge on day 30. The challenge can be done solo or with others to turn one's life into a series of small, time-boxed experiments through continuous change over 30 days. The challenge provides an easily shared model for creating and sticking to changes at home, work, and play.