dig your own grave
成語所屬單字dig
dig your own grave — 慣用語
1. to do something that will cause serious problems for yourself in the future, esp
1.慣用語
釋義
自掘墳墓；為自己製造麻煩
to do something that will cause serious problems for yourself in the future, especially by acting in a way that seems to help you now but will hurt you later
例句
The politician dug his own grave by lying to the public about his past.
If you keep spending more than you earn, you are digging your own grave financially.