You'd better watch your step or you'll get into trouble again.

你最好留点儿神， 免得再惹麻烦。

Are you ready for this?

想听着。

Don't lose sleep over it.

别因为这事儿睡不着觉。

Everything will fall into place.

事情该怎样，就会怎样。

Don't let it get you down. it will be over with soon.

别为此烦恼。 事情很快就会过去的。

Don't be too sure.

别那么肯定。