When Professor Laurie Santos first offered a course about psychology and happiness at Yale University, over a thousand students signed up.This week on NEXT, Santos gives us tips on how we can be happier in our lives. Plus, we’ll hear dream experts discuss the evolution of COVID-19 dreams. And we talk to author, illustrator and TV writer Jonny Sun about his relationship with work and free time; and the things he’s unintentionally inherited from his family.