he One Thing: The Surprisingly Simple Truth Behind Extraordinary Results (stylized The ONE Thing) is a non-fiction self-help book written by authors and real estate entrepreneurs Gary W. Keller and Jay Papasan.[1][2][3] The book discusses the value of simplifying one's workload by focusing on the one most important task in any given project.[4][5][6] The book has appeared on the bestseller lists of The New York Times,[7] The Wall Street Journal,[8] USA Today, and Amazon.com.[9] It was first published by Bard Press on April 1, 2013.[2]