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By Christian Harrison
By James M. Kouzes (Emeritus, Tom Peters Company), Barry Z. Posner (Leavey School of Business and Administration and Santa Clara University)
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By John P. Kotter
By Dawson, Sandra
By Carol S. Dweck
By Errol Lawson
By John Heider
By Amy Jen Su, Muriel Maignan Wilkins
By Sir John Whitmore
By Steven Kotler
By Bill Burnett, Dave Evans
By Max Lucado
By Jane Miskell, Vincent Miskell
By Dr Spencer Johnson
By Napoleon Hill
By Larry Winget
By Sang H Kim, PhD
By Adam Grant, Sheryl Sandberg
By Dov Seidman
By Steven Levy
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By Tim Leberecht
By Eric Schmidt, III, Jonathan Rosenberg, Alan Eagle
By Jonathan Mildenhall
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