dig one's own grave

Seriously harm oneself, cause one's own ruin or downfall. For example, If Sam pursues that course, he'll be digging his own grave. [First half of 1900s]

Common Names:

Name	Pronounced	Usage
Seward	SOO-ərd	English
Rory	RAWR-ee	Irish, Scottish
Yngvildr	-	Ancient Scandinavian
Zyta	ZI-tah	Polish
Ah	-	Chinese
Henrietta	hen-ree-ET-ə (English)	English, Hungarian, Finnish, Swedish, Dutch