Cheer up!

振作起来!

Pull yourself together!

重新振作起来。

Do a good job!

好好干!

Take a chance!

给自己一次机会碰碰运气吧!

Hang in there!

别松劲!

Try harder!

再加把劲!

Don't give up!

别认输!/别放弃!

You can do it!

你可以的!

You can do anything if you really want to.

想做你一定能做得到。

There's a chance.

这是一个机会。