Preview: Oprah Winfrey and Arthur Brooks on social media's destructive power
Oprah Winfrey and Harvard professor Arthur Brooks, famed for his lessons on happiness, have collaborated on a book about finding enjoyment and meaning in your life: "Build the Life You Want: The Art and Science of Getting Happier." Watch this preview of their interview with Norah O'Donnell, to be broadcast on "CBS News Sunday Morning" September 10.