Because people feel guilty about pursuing their own happiness.

人们为追求自己的快乐感到内疚。

哈佛公开课 - 幸福课课程节选

People have their own definitions of happiness. What does happiness mean to you?

每个人对于幸福都有不同的定义。对你来说，幸福是什么？

幸福的定义 - SpeakingMax英语口语达人