既来之, 则安之， 你必须多动脑子， 想出个新的解决方法来。

You would take things as they came. All you had to do was think a little harder and come up with a new solution.

《新英汉大辞典》

既来之，则安之；既到桥头，就跨过去。

Let's cross the bridge when we come to it.

youdao

你将不再期望有好事发生(或坏事)，只选择既来之则安之，变得知足，无论发生什么。

You will no longer expect good things to happen (or bad things), but will just take things as they come, and be content with whatever comes.

youdao