Michael Bungay Stanier is the founder and senior partner of Box of Crayons, a company that works with organizations, ranging from AstraZeneca to Xerox, to help them do more great work. A Rhodes scholar who earned both arts and law degrees with highest honors from Australian National University and an MPhil from Oxford, he is a popular speaker at business and coaching conferences, and was named Canadian Coach of the Year in 2006. He lives in Toronto.

SETH GODIN is a bestselling author, entrepreneur and agent of change. His book Permission Marketing was an Amazon.com Top 100 bestseller for a year, a Fortune Best Business Book and it spent four months on the Business Week bestseller list. It also appeared on The New York Times business book bestseller list. He lives in Westchester County, New York.

Leo Babauta has been a reporter, editor, speechwriter, and freelance writer for the last 17 years. He founded ZenHabits.net with no funding in January 2007, and one year later it is a top 50 blog with about a million unique visitors per month. Using the methods he shares in THE POWER OF LESS over the last two years, he's trained and successfully completed a marathon, he's doubled his income, he's eliminated his debt, he's quit smoking, and he's written a novel.