be your own worst enemy
US /bi jʊər oʊn wɜrst ˈɛn.ə.mi/
UK /bi jʊər oʊn wɜrst ˈɛn.ə.mi/
1.
成為自己最大的敵人, 自作自受
to cause most of your own problems because of your attitude or behavior
:
•
He tends to be his own worst enemy, always sabotaging his chances of success.
他往往是他自己最大的敵人，總是破壞自己的成功機會。
•
If you keep procrastinating, you'll be your own worst enemy when the deadline comes.
如果你繼續拖延，到截止日期時你就會成為自己最大的敵人。