Will power is trying hard not to do something that you really want to do.

意志力就是克制自己不去做自己很想做的事。

youdao

If I had the power to make one wish for you, I would find it very hard to decide what gift to give — what gift would help you to happiness.

如果我有可以为你许一个愿望的能力，我将发现很难决定给你一个怎样的礼物，什么样的礼物可以帮助你得到幸福。

youdao

If I had the power to make one wish for you, I would find it very hard to decide what gift to give — what gift would help you to happiness.

如果我有可以为你许一个愿望的能力，我将发现很难决定给你一个怎样的礼物，什么样的礼物可以帮助你得到幸福。

youdao