gǎi xié guī zhèng

改邪归正 (改邪歸正)

forsake hearsay and return to the correct path

to turn over a new leaf; return to the straight and narrow; to mend one’s ways

Example:

改邪归正, 重新做人
gǎixiéguīzhèng, chóngxīn zuòrén
break with an evil past and begin a new life