Gretchen Rubin

New York Times Best-Selling Author of "The Happiness Project;" Host of Podcast "Happier with Gretchen Rubin"

Gretchen Rubin - Knowing Yourself: Why You're Happy and You ...

Jane Lynch

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

Christy Turlington Burns

Model & Founder of Every Mother Counts; Anti-Smoking Activist

Biz Stone

Co-Founder of Twitter

Charlie Rose

Anchor and Executive Editor

Tim Ferriss

Angel Investor & Author of "The 4-Hour Workweek"

Joe Torre

Chief Baseball Officer for Major League Baseball; National Baseball Hall of Famer, 4-Time World Series Champion & 9-Time MLB All-Star

Lily Tomlin

Actress & Comedian; Star of Netflix's "Grace and Frankie"

Matthew Kelly

Internationally-Acclaimed Speaker & Bestselling Author

Nothing Is Random: The Old, The New, and The Enduring Ideas In Business

Bobby Flay

Chef & Host of "Throwdown With Bobby Flay" and "America's Next Great Restaurant"

Kathy Bates

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

John Mackey

Co-Founder & CEO, Whole Foods Market

Ken Dychtwald

Founder & CEO of Age Wave; Gerontologist & Expert on Aging-Related Issues

Jason Alexander

Actor, Writer & Director; Best Known for His Work on "Seinfeld"

Kelly Osbourne

Fashion Designer, Singer & Actress; Former Contributor to E!'s "Fashion Police"; Daughter of Ozzy and Sharon Osbourne

Anthony Anderson

Actor, Producer, Comedian, Writer & Game Show Host, Best Known for ABC’s "Black-ish"

Andre Agassi

Retired World No. 1 Tennis Player & International Tennis Hall of Famer; Olympic Gold Medalist, Entrepreneur & Philanthropist

John Stossel

Emmy-Award Winning Journalist

Jada Pinkett Smith

Actress, Host of "Red Table Talk" & Founder of 100% WOMON

Maureen McCormick

Actress & Author Best Known for "The Brady Bunch"