关于“世上无难事，只怕有心人”的英文翻译，综合多个权威来源的信息如下：

核心翻译

最标准的翻译为：

> Nothing in the world is difficult for one who sets his mind to it.

这句话出自英语谚语，强调只要有决心，世上没有克服不了的困难。

其他常见表达

- Where there's a will, there's a way.

- Nothing is difficult to the man who wills.

- A determined mind can turn obstacles into opportunities.

这些表达与原句含义相近，可根据具体语境选择使用。

例句参考

- At that moment, I believed that if I set my mind to do something, anything is possible.

- The project seemed impossible, but with relentless effort, we achieved our goal.

通过例句可进一步理解其应用场景。

建议在正式写作和口语中优先使用 Nothing in the world is difficult for one who sets his mind to it，因其更符合英语表达习惯且被广泛认可。