be your own worst enemy
idiomPart ofenemy
be your own worst enemy — idiom
1. to cause problems for yourself through your own actions, habits, or decisions, w
1.idiom
Definition
to cause problems for yourself through your own actions, habits, or decisions, without needing anyone else to act against you
Example
Eitan keeps arriving late to every meeting and missing important discussions — he is his own worst enemy.
Eliska spends all her money the day she gets paid and never saves anything — she is her own worst enemy.