Tim Grover

CEO of Attack Athletics, Best-selling Author of "Relentless" and "Jump Attack"

Nir Eyal

Bestselling Author & Expert on the Intersection of Psychology, Technology and Business

Charles Duhigg

Pulitzer Prize-Winning Journalist & Bestselling Author of "The Power of Habit"

Supercommunicators: How to Unlock the Secret Language of Connection

Tony Horton

Fitness Expert & Founder of Fitness Program P90X

Crush It!: The Revolutionary Fitness Plan for All Levels That Burns Fat, Builds Muscle,...

Sasha Andreev

Actor, Emcee & Host of HGTV's "Curb Appeal"

Jessica Herrin

Founder & CEO of Stella & Dot

Stefan Richter

Chef and Owner, Stefan's Restaurants; Former Top Chef "Cheftestant"

Jonathan and Drew Scott (The Property Brothers)

Hosts of HGTV's "Property Brothers"

Tom Silva

General Contractor, Member of Home Improvement Team on "This Old House"

Summer Baltzer

Art Director; Host of HGTV's "Design on a Dime"

Dr. Travis Stork

Bestselling Author, Emergency Medicine Physician & TV Personality Known for "The Doctors"

Jaslene Gonzalez

Puerto Rican-American Model, TV Host & Winner of America's Next Top Model; Founder of "On Set with Jaslene"

Brandi Temple

CEO & President of Kidbox.com

Olivia Ward

Winner of "Biggest Loser" Season 11

Russell Wilson

NFL Quarterback for the Pittsburgh Steelers; Super Bowl Champion, Entrepreneur & Philanthropist

Rob Riggle

Actor, Comedian, Writer, Producer, Director & Former U.S. Marine

Winona LaDuke

Executive Director of Honor the Earth

Jan Fields

Former President of McDonald's USA & Member of the Board of Directors at Alimentat

Bill Hader

Actor, Comedian, Writer, & Director; Known for "Saturday Night Live" & "Barry"

Seth Meyers & Bill Hader's Favorite SNL Memories & Barry Finale

Kevin Roberts

Authority on Brands & the Future of Marketing; Executive Chairman, Saatchi & Saatchi; Creator of Groundbreaking Concept & Book: Lovemarks