Self-Motivation
David Goggins
Former Navy Seal
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Bryan Cranston
Actor
Critical Thinking
Liv Boeree
International Poker Champion
Emotional Intelligence
Amaryllis Fox
Former CIA Clandestine Operative
Management
Chris Hadfield
Retired Canadian Astronaut & Author
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Why We Need More Sleep

Forty percent of Americans sleep less than seven hours per night, and that's a problem.

A seven-year-old cat sleeps besides its owner near Sao Conrado beach in Rio de Janeiro, Brazil on October 9, 2011. (Photo: Yasayoshi Chiba/AFP/Getty Images)

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