Keep smiling! Things will calm down.

乐观一点，事情会平息下来的。

It's not as bad as all that.

事情没有那么糟。

Things are never as bad as they seem.

事情往往不像看上去的那么糟。

Win a few, lose a few. That's life.

有得也有失，生活就是如此。

Let's look on the bright side.

我们来看看它好的一面。

Every cloud has a silver lining.

再黑暗的地方也有一线光明。

When god closes a door, he opens a window.

山不转水转。

Tomorrow is another day.

有明天就有希望。

Stop carrying the weight of the world on your shoulders.

别太操心了，没有你地球照样转。