Tony Robbins
Jonah Sachs
Nandini Vijayaraghavan
David Burkus
Jim Collins
P.C. Tulsian
Donald J. Trump
David M. R. Covey , Stephan M. Mardyks
Margaret Anne Reid
George Ilian
Eric Garton , Michael C. Mankins
Seth Godin
Steven D. Levitt , Stephen J. Dubner
Sheena Iyengar
Paranjoy Guja Thakurta , Shinzani Jain