她需要理解自信的重要性。

She needs to understand the importance of confidence.

youdao

和乐观的人相处——因为他们懂得自信的重要，并且能帮助你集中精力做你力所能及的事。

Surround yourself with positive people-they know the importance of confidence and will help you keep focused on what you can do instead of what you can't.

youdao

他们自信笃定，最重要的是，他们知进退，张弛有度。

They project the image of confidence, and perhaps most importantly, they know when to stop.

youdao