Shawn Achor

Harvard Professor, Researcher, Positive Psychology Expert, Author of "The Happiness Advantage" & "Big Potential"

Amy Purdy

Former "Dancing with the Stars" Contestant & Paralympic Professional Snowboarder

Ben Stein

Political Economist, Commentator, Author & Actor

Sherry Lansing

Former CEO of Paramount Pictures & Founder of The Sherry Lansing Foundation

Iyanla Vanzant

New York Times Best-Selling Author, Spiritual Life Coach & Host of "Iyanla Fix My Life"

George Takei

Actor, Social Justice Activist & Social Media Mega-Power

Dara Torres

12x Olympic Medalist, NYT Bestselling Author, Entrepreneur & Healthcare Reform Advocate

Peter Guber

Executive, Entrepreneur & NYT Bestselling Author; Operating Owner of the 3-Time NBA Champion Golden State Warriors

Sophia Bush

Actress, Humanitarian & Author

Tim Gunn

Fashion Icon, Former Co-Host & Mentor of "Project Runway"

Greg Louganis

4x Olympic Gold Medal Diver; LGBTQ Activist & Author

Jon Steinberg

CEO of Future Plc., Founder of Cheddar; Former President & COO of Buzzfeed; Former CEO of Daily Mail.com in North America

Kate McKinnon

Emmy Award-Winning Comedian & Former Cast Member of "Saturday Night Live"

Seth Mattison

Co-Founder & Chief Movement Officer of Luminate Labs, Expert on Workforce Trends and Business Strategy; Author

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Rob Waldo Waldman

Decorated Fighter Pilot; Power of Relationships & Trust Advocate

Monica Lewinsky

Producer, Social Activist, Contributing Editor to Vanity Fair, Expert on Cyberbullying, Women's Issues & Reinvention

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Katty Kay

Award-Winning Journalist & Anchor; Best-Selling Author

Kal Penn

Actor, Writer, Producer & Former Associate Director of the White House Office of Public Engagement

Anne-Marie Slaughter

Foreign Policy Expert, Author & CEO of New America Foundation

Tavis Smiley

Broadcaster, Author, Publisher, Advocate, and Philanthropist