Now a major motion picture starring Simon Pegg, Rosamund Pike, Toni Collette, and Christopher Plummer The international bestseller with more than two million copies sold "Once upon a time there was a young psychiatrist called Hector who was not very satisfied with himself. . . . And so he decided to take a trip around the world, and everywhere he went he would try to understand what made people happy or unhappy." Hector travels from Paris to China...