The difference between the extremely happy people and extremely unhappy people is not that one gets sad, of upset, or anxious, or depressed; and the other does not.

极其快乐的人和极其不快乐的人,区别不是在于一个会伤心，难过，焦虑或抑郁;,而另一个不会。

哈佛公开课 - 幸福课课程节选

and I just didn't get down and I didn't get depressed. You know, like...

我不沮丧，不难过，就像……

不要放弃 - SpeakingMax英语口语达人