我个人可能改变不了什么，但如果每个人都这样想，我们就可以使它发生变化。

I might not be able to change anything all by myself but we can make a difference if everybody thinks this way.

youdao

担心纯属浪费时间，又改变不了什么。它只会偷走你的快乐让你很忙却什么也解决不了。

Worry is a total waste of time. It doesn't change anything. All it does is steal your joy and keep you very busy doing nothing.

youdao

不过如果一头骡子不想工作了，什么都改变不了它的心意。

But if a mule does not want to work, nothing will change its mind.

youdao