Sun Tzu
Morgan Housel
Adam Grant
Robert Simmons
Peter Hollins
jam shetty
Dr. Norman Vincent Peale
Steven Schuster
Patrick King
Robert L. Piccioni
Keven D. Johnson
Graeme Donald
TJ Hoisington
Norman Vincent Peale
Buddhadeva Bose
Jörg Zittlau , Niels Birbaumer
Neil Francis