**

What should we do when others create so-called "obligations" and impose them on us? How can we resist pressure and avoid being exploited based on others' misperceptions of "courtesy" and "responsibility"? After experiencing hundreds of cases, David Seabury, an authority in American psychology, firmly believes that rejecting the "evil selfishness" of others and defending the "good selfishness" of oneself is the key factor for people to achieve happiness. In this book, he will reveal the truth about selfishness and teach you the art of selfishness: how to say no when others make unreasonable demands for your time, energy, and emotions; and guide readers to release their true selves that have been suppressed for a long time, and gain unprecedented freedom and joy.