be (one's) own worst enemy



be (one's) own worst enemy

To do things that complicate one's life and/or keep one from success; to be self-destructive or self-sabotaging. Of course Tommy started skipping school again—he's his own worst enemy. She always sabotages a relationship when it's going really well because she's her own worst enemy.
See also: enemy, own, worst

Common Names:

NameGenderPronouncedUsage
Melech-Biblical, Hebrew, Biblical Hebrew
Jadranko-Croatian, Serbian, Slovene
Ioneie-O-nee (English), IE-o-nee (English), ie-ON (English)Greek Mythology, English
RosalindROZ-ə-lindEnglish
Ecee-JETurkish
HyehyeKorean