one's own worst enemy

*one's own worst enemy

Fig. consistently causing oneself to fail; more harmful to oneself than other people are. (*Typically: be ~; become ~.) Ellen: My boss is my enemy. She never says anything good about me. Jane: Ellen, you're your own worst enemy. If you did your job responsibly, your boss would be nicer.

Common Names:

Name	Pronounced	Usage
Tatton	TAT-ən	English (Rare)
Klementyna	kle-men-TI-nah	Polish
Joakim	YO-ah-kim (Swedish), YO-ah-keem (Finnish)	Swedish, Norwegian, Danish, Finnish, Serbian, Macedonian
Cato (2)	-	Dutch
Peredur	pe-RE-deer (Welsh Mythology)	Welsh Mythology, Arthurian Romance
Casper	KAHS-pər (Dutch)	Dutch, Swedish, Norwegian, Danish