Chris Gardner

Author of "Pursuit of Happyness," Entrepreneur, Speaker & Philanthropist

Chris Hughes

Senior Fellow, Institute on Race, Power, and Political Economy; Co-founder of Facebook & Former Editor-in-Chief at The New Republic

Chris Matthews

Former Host, Hardball with Chris Matthews, MSNBC

Chris Powell

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

Christiane Northrup

Authority on Women's Health, Bestselling Author of "Goddesses Never Age"

Christine Cashen

Hall of Fame Motivational Speaker; Author of "The Good Stuff: Quips & Tips on Life, Love, Work and Happiness"

Clarence B. Jones

Former Adviser & Speechwriter for Martin Luther King Jr.

Clinton Kelly

Host of ABC's "The Chew"

Curt Coffman

Workplace Consultant & New York Times Bestselling Author; Known for "First Break All the Rules"

Cynthia Cooper

Olympic Gold Medalist, Two-Time WNBA MVP; Former Head Coach of Texas Southern Women's Basketball Team

Cynthia F. Cooper

WorldCom Whistleblower

Daisy Fuentes

Cuban-American Correspondent, Actress, Fashion Designer & Television Host

Dan Ariely

Behavioral Economist; Professor at Duke University; Author; Founding Member of The Center for Advanced Hindsight

Dan Buettner

National Geographic Writer, Renowned Explorer & Author of "Blue Zones"

Dan Clark

Master Motivator, CEO, New York Times Bestseller & Member of the National Speakers Hall of Fame

Dan Savage

Advice Columnist & Host of the "Savage Lovecast" Podcast; LGBTQ Activist

Dan Thurmon

Motivational Change Management & Transformation Speaker; Peak Performance Expert & Author of "Off Balance on Purpose"

Danny Trejo

Actor, Author, Activist & Restaurateur; Recovery & Intervention Counselor for Troubled Youth

Dave Barry

New York Times Best-Selling Author & Humorist

Swamp Story: A Novel

David Aikman

Best-selling author & former TIME Magazine Sr. Correspondent