courage

• 鼓起勇气

  summon up one's courage

• 勇气百倍

  build up one's courage

• 勇气不足

  not have enough courage

• 他是个有勇气的人。

  He's a courageous person.

• 要有勇气承认自己的错误。

  One should have the courage to acknowledge one's own mistakes.