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
Hazael	HAZ-ay-əl (English)	Biblical
Aqissiaq	-	Native American, Greenlandic
Shulamith	-	Hebrew
Johann	YO-hahn	German
Manolo	mah-NO-lo	Spanish
Theseus	THEE-see-əs (English)	Greek Mythology