Charles Duhigg (@cduhigg) is a Pulitzer prize-winning reporter at The New York Times and author of Smarter Faster Better: The Secrets of Being Productive in Life and Business and The Power of Habit: Why We Do What We Do in Life and Business.

Paul Bloom (@paulbloomatyale) is a developmental psychologist and author of the upcoming Against Empathy: The Case for Rational Compassion. He joins us to talk about the evolution of our innate (but limited) morality and what we as modern, rational humans

Gratitude may be an overused word, but it doesn't mean we should discount its power. Let's dig into why we should (and how we can) be thankful for gratitude!

Time for Fan Mail Friday, where we'll be answering your questions and dropping some knowledge and feedback to help you kick the weekend off right.

The Art of Charm (@TheArtofCharm) presents one of the most important tools in the toolbox: perfecting your elevator pitch -- a brief and memorable introduction you could make to a fellow passenger in the time it takes to get from the lobby to the penthous

Penn Jillette (@pennjillette) is the vocal half of comic magician duo Penn & Teller and author of Presto!: How I Made Over 100 Pounds Disappear and Other Magical Tales.

In this Minisode Monday, we may not be able to change someone else's behavior directly, but we can change the role we play in our relationship with them. Let's get to it!: The Cheat Sheet: What can you do if the bad behavior of a friend is reinforced...

Time for Fan Mail Friday, where we'll be answering your questions and dropping some knowledge and feedback to help you kick the weekend off right.

Srdja Popovic (@SrdjaPopovic) is the author of Blueprint for Revolution: How to Use Rice Pudding, Lego Men, and Other Nonviolent Techniques to Galvanize Communities, Overthrow Dictators, or Simply Change the World.

Mark Manson (@IAmMarkManson) returns to the show to talk about his new book The Subtle Art of Not Giving a F*ck: A Counterintuitive Approach to Living a Good Life -- available today! F-bomb alert level: juicy orange.