mend your ways

mend (one's) ways

To start behaving in a different, usually preferable, way. After I got in yet another fight at school, the headmaster told me that I had to mend my ways or else I'd be expelled. No matter how old you are, there is still time to mend your ways.
See also: mend, way

mend your ways

COMMON If someone mends their ways, they stop behaving badly or illegally and improve their behaviour. He seemed to accept his sentence meekly, promising to work hard in prison and to mend his ways. When asked if he intended to mend his ways, he told us `I'll try my best.'
See also: mend, way