call it quits
US /kɔl ɪt kwɪts/
UK /kɔl ɪt kwɪts/
1.
to stop doing something, especially because it is difficult or unsuccessful
:
•
After working on the project for hours, we decided to call it quits for the night.
•
If things don't improve, I might have to call it quits and look for a new job.