cut your own throat

US /kʌt jʊər oʊn θroʊt/
UK /kʌt jʊər oʊn θroʊt/
"cut your own throat" picture
1.

自掘墳墓, 自毀前程

to do something that will cause your own failure or downfall

:
If you refuse to cooperate with your team, you'll be cutting your own throat.
如果你拒絕與團隊合作,你就是在自掘墳墓
Raising prices too much could cut your own throat by driving customers away.
價格漲得太高可能會自毀前程,把顧客都趕走。