It is not genetic, and you do not have to be reliant on others to increase your self-confidence.

自信不是遗传的，你不必依赖别来增加你的自信。

youdao

While it may not seem so, if you are low in self-confidence, I strongly believe that you can do things to increase your self-confidence.

如果你缺乏自信，我非常相信你能够做一些事情来增加你的自信，虽然表面看上去可能不是这样的。

youdao

The best way to make yourself strong and increase your self-confidence is to have the courage to do things that you don't think you are sure of.

想要使你自己够坚强与增加你的自信，最好的办法就是拿出胆量去做那些你认为没有把握的事。

youdao

And it will increase your money confidence and positively influence your careers, savings, and self-esteem.

FORBES: Break the Salary Silence: How to Talk About Money