For the sake of emotional health and spiritual peace, people in different walks of life are intentionally cultivating the trait of "gratefulness" as a way to savor and appreciate the bounty of life.

On this Labor Day, listen to a profile of those people in this special episode of Humankind. You'll also hear about people, some of whom are wealthy, who feel the need to be charitable, and how they decide where and when to donate whatever resources they can.

Learn more about Humankind.