dig (oneself) an early grave

To do things or act in a way that is likely to result in one's premature death. You're going to dig yourself an early grave if you keep drinking as much as you do now.

Common Names:

Name	Pronounced	Usage
Onni	ON-nee	Finnish
Lutgardis	-	Ancient Germanic (Latinized)
Doreen	['dɔ:ri:n]
Webber	['webə]
Hrodpreht	-	Ancient Germanic
Yanick	-	Breton, French