好了伤疤忘了疼

好了伤疤忘了疼

Literally means:

forget the pain once the wound is healed; forget the bitter past when released from one's suffering.

Actually means:

It figuratively means forgetting the bitter past or the lesson when the situation improves.

It is usually used to describe a person who fails to draw a lesson from past experience. It carries a sense of derogatory.

好了伤疤忘了疼，比喻景况好了，就忘了过去的痛苦或教训。

它常用来形容人不能吸取以前的教训。具有贬义色彩。