What's the use of worrying about it?

为此事操心有什么用呢？

《牛津词典》

What's the use of just worrying and doing nothing about it?

你干着急顶什么用？

《新英汉大辞典》

Those that are living the life of their dreams know that focusing on solutions is a much better use of their time compared to dwelling, worrying, and complaining about what's wrong in life.

那些过着梦想中生活的人明白，专注于解决问题的办法比花时间比较、担心和抱怨生活到底怎么了要好的多。

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