Dr. Jackie Walters

Award-Winning OB-GYN; Two-Time Breast Cancer Survivor; Cast Member of Bravo's "Married to Medicine"

Nic Sheff

Author & Recovering Addict

Keke Palmer

Actress & Youngest Talk Show Host in TV History

Patricia Arquette

Academy Award-Winning Actress, Activist, Humanitarian & Author

Laverne Cox

Award-Winning Transgender Actress, Producer & Equal Rights Advocate

Lori Allen

Founder & Owner of Bridals by Lori; Star of "Say Yes to the Dress Atlanta;" Breast Cancer Survivor

Amandla Stenberg

Actor, Singer & Activist Known for "The Hate U Give," "The Hunger Games" & "Everything, Everything"

Deborah Norville

Two-Time Emmy Award-Winning Journalist; Anchor of "Inside Edition" & Best-Selling Author

Brett King

Best-Selling Author, World Renowned Futurist & Media Personality

Deepak Chopra

Co-Founder of The Chopra Center for Wellbeing

Hugh Evans

Humanitarian; Founder & CEO of Global Poverty Project

Bethany Hamilton

Professional Surfer & Shark Attack Survivor; Inspiration for the Film "Soul Surfer"

Dr. William Li

Physician, Scientist & Bestselling Author of “Eat to Beat Disease: The New Science of How Your Body Can Heal Itself” and “Eat to Beat Your Diet: Burn Fat, Heal Your Metabolism, and Live Longer”

Jane Lynch

Emmy Award-Winning Actress, Known for "Glee" and Hosting "Hollywood Game Night"

Chris Powell

Trainer and Transformation Specialist on ABC's "Extreme Makeover: Weight Loss Edition"

Robert Cialdini

New York Times Best-Selling Author; The Foundational Expert in the Science of Influence & Persuasion

Mayim Bialik

Neuroscientist, Mental Health Advocate & Actress Known for "The Big Bang Theory"

Wil Wheaton

Actor, Author & Blogger; Known for "Star Trek: The Next Generation" & "The Big Bang Theory"

Daryl Hannah

Actress, Best Known for "Kill Bill" & "Splash"; Environmental Activist

Bert Jacobs

Co-Founder & Chief Executive Optimist of Life is Good

Sean Astin

Actor, Director, Voice Artist & Producer Known For "Lord of the Rings"

Richard Thaler

Professor of Behavioral Science and Economics at the University of Chicago; Author of "Misbehaving: The Making of Behavioral Economics"

Richard Thaler: 'We Are Incapable of Learning From the Past ...

Kathy Bates

Academy Award-Winning Actress; Cancer Survivor & Chairperson for the Lymphatic Education & Research Network

Sheryl Lee Ralph

Actress, Broadway Singer & Producer; Known for "Abbott Elementary"

JP Pawliw-Fry

Co-Founder of the Institute for Health and Human Potential, Author & Columnist

Susan Cain

Bestselling Author; Lecturer; Expert on Culture & The Power of Introverts

Gabrielle Bernstein

Founder of HerFuture.com & New-York Times Best-Selling Author

Michael Gelb

Educator, Innovation & Creativity Expert; Author of "How To Think Like Leonardo Da Vinci"

Elizabeth Banks

Actress Best Known for "The Hunger Games" Series and "Pitch Perfect"

Brittany Snow

Actress, Producer, Director, Singer & Co-Founder of Love Is Louder