There's nothing upsetting or improper about the language of the soul, even on the physicalist point of view.

谈论灵魂并不是什么令人沮丧或不得体的事情,即使是从物理主义的角度来看

耶鲁公开课 - 死亡课程节选

when you feel upset or when you feel frustrated that something is not going the way that you wish it would.

当你觉得很失落，或者当你因为事情不像你期望的那样进展而感到沮丧时，你也可以使用这个句型。

I'm frustrated 课堂 - SpeakingMax英语口语达人

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