In the last three months alone, over 1,000 books on happiness were released on Amazon, including Happy Money, Happy-People-Pills For All, and, for those just starting out, Happiness for Beginners.

仅在过去的三个月里，亚马逊就发布了1000多本关于幸福的书籍，包括《快乐的钱》、《为所有人打造的幸福灵药》等，对于刚刚入门的人来说，还有《快乐初学者》。