dig your own grave
US /dɪɡ jʊər oʊn ɡreɪv/
UK /dɪɡ jʊər oʊn ɡreɪv/

1.
自掘墳墓, 自作自受
to do something that will cause you problems or failure in the future
:
•
If you keep lying to your boss, you're just going to dig your own grave.
如果你繼續對老闆撒謊,你只會自掘墳墓。
•
By refusing to compromise, the politician was digging his own grave with the voters.
通過拒絕妥協,這位政客正在自掘墳墓,失去選民的支持。