我对自己越发没自信，因而对即将到来的考试也感到非常焦虑。

Increasingly lacking confidence about myself, I am nervous of the coming exam.

youdao

蜥蜴对自己和石头颜色相同的保护色很自信，即便感觉危险也不动。

Confident in its camouflage, being the same colour as the rocks, the lizard stands still when it feels danger.

《柯林斯英汉双解大词典》

你也太有自信了。

You are too confident.

youdao

I become more aggressive and more sexually vibrant and simply more beautiful.

我变得更加自信,更加性感,也更加迷人

耶鲁公开课 - 心理学导论课程节选

This is magical thinking and it affects people because it gives them a sense of confidence and power over events that are thought to be random or uncontrollable.

这是神奇式思考,而它也影响人们,因为它给人自信和力量,去应对那些随机或者不可控的事件

耶鲁公开课 - 金融市场课程节选

There's a kind of colloquial clarity and confidence, quite different from the vernacular language in the Hardy poems I was just reading, which are also poems of the countryside.

有一种口语式的清晰和自信，与哈迪诗中的地方语言十分不同,我也在阅读关于乡村的诗歌。

耶鲁公开课 - 现代诗歌课程节选