know one’s own limitations
要当特警就要有自知之明
To become a SWAT officer, you need to know your own limits.
— 精英部队2:大敌当前 (2010)
原来你也有自知之明
So you do know your own limitations after all.
— 铃芽之旅 (2022)
她倒有自知之明
At least she knows her own limitations.
— 办公室的故事 (1977)