5 lessons on happiness — from pop fame to poisonous snakes
Singer-songwriter Mike Posner took a break from his music to take a walk — a very long walk, across the entire United States. He shares five lessons he learned from his epic, eventful trek (snakes might be involved) and how it helped him find the key to happiness. (He also performs two hit songs: "I Took a Pill in Ibiza" and "Could You Do the Same.")