beat yourself up

To beat yourself up means to criticize yourself extra-strongly and feel extremely guilty and bad about something you did, or about some failure or mistake you made.

To beat yourself up的意思是对自己做过的事情、失败或犯过的错误特别强烈地批评自己，并感到非常内疚和糟糕。

A boy was especially sad and upset because he failed a test.

一个男孩因为考试没过而感到十分的沮丧。

You can say, “Hey, don't beat yourself up.”

你就可以对他说“嘿，别太自责。”

It means don't spend so much negative energy criticizing yourself after a failure.

它的意思就是不要在失败后用太多的负能量来批评自己。