call it a day
call it a day
(informal) to decide or agree to stop doing something
After forty years in politics I think it's time for me to call it a day (= to retire).
e.g.
Asirpa, let's all it a day. We can try again tomorrow. アシㇼパさん 今日はここまでにして また明日出直そう (/yupeco/『ゴールデンカムイ』3話)