Meaning of the word "clean up your act" in English

What does "clean up your act" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

clean up your act

US /kliːn ʌp jʊər ækt/
UK /kliːn ʌp jɔːr ækt/
"clean up your act" picture

Idiom

to start behaving in a more acceptable or responsible way

Example:
If you don't clean up your act, you'll lose your job.
The coach told the team to clean up their act after a series of poor performances.