Dalia Mogahed

President and CEO, Mogahed Consulting, LLC; Author, "Who Speaks for Islam?"

Dan Millman

Self-Help Author, Former World Champion Gymnast & Coach

Danielle La Porte

Host of The Fire Starter Sessions

Danita Patterson

Danita Patterson is founding president and principal content developer of Destiny Unlimited, Inc., a family entertainment company that develops innovative film, television and new media content.

Danny Mekić

Dutch Technology Expert, Young Entrepreneur & Boardroom Advisor on Future Strategy, Innovation, and Digital Transformation

Darrell Andrews

Global Motivational Strategist

Darrell Kirch

President & CEO of the Association of American Medical Colleges; Psychiatrist & Clinical Neuroscientist

Darren Walker

President of the Ford Foundation; Chair of the US Alliance on Impact Investing

HOW Insights — NEW

Dave R. Brown

Sales Trainer, Emcee and Coach

Dave Ramsey

Radio Personality, Multiple NYT Best-Selling Author, Entrepreneur & Host of "The Dave Ramsey Show" Podcast

David Blanchflower

Member of the Bank of England Monetary Policy Committee from 2006 to 2009

David Bornstein

Author, Fixes column in The New York Times and Founder, Solutions Journalism Network

David Brobeck

Professional Speaker & Educator

David Carter

David Carter is the CEO and Founder of Awareness Inc.

David Clutterbuck

Professor at the Institute of Coaching; World Authority on Coaching, Mentoring & Leader Development

The Secrets Behind Successful Mentorship with David Clutterbuck

David E. Goldberg

Entrepreneur, Scientist & Pioneer of Artificial Intelligence; President of Big Beacon, a Movement for the Transformation of Engineering Education

David Eun

President of Samsung NEXT and Chief Innovation Officer of Samsung Electronics

David France

Director of Oscar-nominated documentary "How to Survive a Plague"; Award-winning Journalist, Best-selling Author

David Hyner

Professional Speaker, "The Massive Goal Principle"

David J. Pollay

Syndicated Columnist; Popular Blogger; Speaker and Seminar Leader

David Mandelkern

Dave Mandelkern is the Executive Vice President, Chief Technology Officer and co-Founder of Docent, Inc.

David Moinina Sengeh

Minister Of Basic and Senior Secondary Education & Chief Innovation Officer for the Government of Sierra Leone

David de Ferranti

Senior Research Fellow at 3ie; International Development & U.S. Domestic Policy Affairs

Dawn Raquel Jensen

Creating Social Business Catalyst and Digital Influence Leaders Online

Dawnna St Louis

Business & Sales Acceleration Coach, Growth Mindset Speaker

Debbie Phelps

Author & Mother of Olympic Icon Michael Phelps

Debra Dunn

Consulting Associate Professor, Stanford University d.school

Debra Kimbrough

Child Safety Expert, Debra Kimbrough, protects children by teaching parents and teachers better supervision and guidance skills.

Dee Merian

Award winning author 2010 and 2011

Dennis E. Gilbert

Creating business success and positive cultures through people.