Peggy Whitson

Director at Axiom Space; NASA's Most Experienced Female Astronaut; Biochemistry Researcher

Peggy Whitson, American with most time in space, set to return to ...

Lance Armstrong

World Champion Cyclist, Olympian & Cancer Survivor

Matthew McConaughey

Academy Award-Winning Actor, Writer & Philanthropist

Ryan Holiday

Media Strategist, International Best-Selling Author & Host of "The Daily Stoic" Podcast

Right Thing, Right Now: Justice in an Unjust World (The Stoic Virtues Series)

Jamie-Lynn Sigler

Actress Known for "The Sopranos" & "Big Sky" & Co-Host of "MeSsy"; Spokesperson for Eating Disorders & Multiple Sclerosis Survivor

Max Lucado

Award-Winning Author & Senior Pastor of the Oak Hills Church

Brooklyn Decker

Actress, Model & Tech Entrepreneur

Jensen Ackles

Actor Known for his Role on CW's "Supernatural"

Elijah Wood

Actor; Best Known for the Role of Frodo Baggins in the "Lord of the Rings" Trilogy

Richard Linklater

Film Director, Producer & Screenwriter Known for "Dazed and Confused," "School of Rock" and "Boyhood"

Noah Kagan

Founder of AppSumo; Internet Entrepreneur

How I Lost 170 Million Dollars: My Time as #30 at Facebook