Never mind.

没什么，别在意。

Don't worry about it.

别担心那件事了。

Better luck next time!

下次一定会走运的!

Don't blame yourself.

别责备自己了。

Don't worry, it happens.

别担心了，那是常有的事。

Don't give it another thought.

别想得太多。

This is nothing.

这算什么呀。

It could have been worse.

还有比这更糟的呢!

Don't feel so bad about yourself.

别那么自暴自弃。

Everything will be fine.

一切都会顺利的。