Making a career out of happiness sounds like a dream, right? But for Shawn Achor, to properly research, write and speak about happiness and human potential, he’s had to dive into the grim realities of what makes us unhappy. Achor chats with Ellis about his new book Big Potential and the ways we can combat rising depression and suicide rates, and why we could all take a note from lightning bugs.

Your company might implement Casual Friday, but what about Chrono-type Friday? Best-selling author and television host Daniel Pink thinks it wouldn’t be a bad idea. Chronobiology is the study of how organisms adapt to solar and lunar related rhythms. Pink talks with SUCCESS.com’s Shelby Skrhak about his new book When: The Scientific Secrets of Perfect Timing and why it might actually be good for a basketball team to be losing at halftime.

You might not think you’d be inspired by someone nicknamed “Mr. Irrelevant.” But former football player David Vobora, who was given the moniker for being the last selection in the 2008 NFL Draft, calls it an “honorable title.” Vobora speaks with Ellis about training athletes, people with disabilities and American veterans, and sheds light on how an addiction to painkillers nearly destroyed his life.