[痛改前非, tòng gǎi qián fēi, ㄊㄨㄥˋ ㄍㄞˇ ㄑㄧㄢˊ ㄈㄟ]completely correcting one's former misdeeds (成语 saw); to repent past mistakes and turn over a new leaf; a reformed character#64263[Add to Longdo]
[わがみをつねってひとのいたさをしれ, wagamiwotsunettehitonoitasawoshire](exp) (id) you can't appreciate others' suffering until you've gone through it yourself; pinch oneself and know others' pain[Add to Longdo]