Safi Bahcall is the author of "Loonshots: How to Nurture the Crazy Ideas That Win Wars, Cure Diseases, and Transform Industries."

Scott Galloway is the author of "The Four: The Hidden DNA of Amazon, Apple, Facebook, and Google" and "The Algebra of Happiness."

Sam Harris, PhD is the host of the Making Sense podcast .

Gary Vaynerchuck is a serial entrepreneur and the CEO and co-founder of VaynerMedia.

Chip Conley is a former boutique hotelier and global head of hospitality and strategy for Airbnb. He's the recent author of "Wisdom @ Work."

The podcast we've all be waiting for.

Scott Galloway is the author of "The Algebra of Happiness." He hosts 1k: The 1,000 Second Interview Podcast as well as co-hosts Pivot with Kara Swisher.

Derek Sivers is the creator of CD Baby and author of "Anything You Want."

George McGill, one of our favorite Twitter follows, joins Chris to chat about mental models, books, and how to improve your thinking.

Daniel Gross is a former partner at Y Combinator and current founder of Pioneer.

Chamath Palihapitiya is the founder and CEO of Social Capital. He is also an owner and board member of the Golden State Warriors.

A summary of Naval Ravikant's 2018 Periscope sessions and podcast appearances

Naval Ravikant is the CEO of AngelList as well as an investor in about 200 companies and an adviser to many.

Kapil Gupta has come out swinging - "Ask any of your meditation instructors if they can turn off their thought at will". This one was GOOD.

This is a compilation episode, with clips about happiness from some of Lewis' past guests.