大声说出来。当你不自信的时候，你不能做好你想做的事情。

Speak loudly. When you are not confident, you can't do well what you want to do.

youdao

他从一个吞吞吐吐、毫不自信的候选人成长为一位流畅的辩手。

He had emerged from being a hesitant and unsure candidate into a fluent debater.

《柯林斯英汉双解大词典》

但是作为少数者的声音并不她不自信的唯一原因。

But being the minority voice wasn't the only reason she felt unsure of herself.

youdao

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

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So my walk is, it's not confident and I'm not sure if I'm strong in my step yet.

所以我的走姿不是特别自信，担心步伐会不稳。

I wonder if 实战 - SpeakingMax英语口语达人

And your mother is feeling really insecure.

但你的母亲觉得很不自信。

You look 课堂 - SpeakingMax英语口语达人