In Episode 22, Billy Donnelly discusses the normalcy of feeling sadness and explores the importance of allowing yourself to process these emotions rather than ignoring them and/or pretending they are not present. Often people try to unsuccessfully force happiness within themselves when they feel down or depressed, and Billy stresses the need to be in the moment with these feelings in order to try finding a way forward. He talks about the idea that "everybody hurts" (thanks, R.E.M.) and that it's the ability to acknowledge these so-called "negative feelings" that makes us human.