The basic premise for the book is that a journalist takes the advice of an old man on a bus. What was the advice you might ask? It was simply "Say yes more". Danny Wallace took this and decided that the root of happiness for him was to be more positive. Constantly. So he decided to say Yes. Yes to every question which was asked to him. The tales and tribulations the reader goes through with Danny can be extremely funny and may cause you to fall off your chair with laughter. It is truly amazing how far the power of Yes will take Danny in his journey of discoverment.