Hugh Aldersey-Williams Jeffrey Archer Juan Arias Dan Ariely Dr Linda Backman Alfred Bader Mikkel Birkegaard Alain de Botton Dan Brown Burroughs Augusten Burroughs Richard Carlson Dale Carnegie Gina Cerminara Nien Cheng Deepak Chopra Paulo Coelho J.M.G. Cowie Betty DeGeneres Ellen DeGeneres John D. DeHaan Wayne Dyer Shelley Emling Viktor E. Frankl Malcolm Gladwell Lawrence Goldstone Brian Greene Elizabeth Forsythe Hailey Ryan Holiday;Stephen Hanselman Danielle Harlan Daniel C. Harris Sandra Hempel Linda A. Hill Ryan Holiday Paul L. Houston Walter Isaacson Michio Kaku Paul Kalanithi Robert Kanigel Roberta Kaplan Sam Kean Phil Knight Timothy J. Koegel Marie Kondo Elizabeth Kostova George Kriz Lampman, James Vyvyan, Donald Pavia Gary Madeleine L'Engle Joel Martin Peter Mayle Kathleen McGowan John McMurray Lynne McTaggart David Mendell Gary L. Miessler Dan Millman Hayao Miyazaki Terry Mutchler Michael Newton Barack Obama Nicholas Petraco Robert M. Pirsig Alfredo Quiñones-Hinojosa Jehane Ragai Portia de Rossi Miguel Ruiz Saferstein Carl Sagan Bruce Schechter Robert Schwartz David Sedaris Erich Segal Helmstter Shad R SHARMA Jose Silva Simon Sinek Simon Singh Amy Tan The Forensics Expert Group Molly Suber Thorpe J. R. R. Tolkien Eckhart Tolle Sally Wainwright Neale Donald Walsch Meghan J. Ward Sarah Waters Brian L. Weiss Amy Whitaker Marianne Williamson