I do not want to take a risk.

我不想冒那个险。

I have to take a risk in my job.

做我这种工作不得不冒险。

A:I am really worried about it, I don't know what to do.

我真的很担心这个，我不知道该做什么。

B:I know it's hard to make a decision, but sometime you just have to take a risk.

我知道做决定很难，但是有时候你需要冒险。