Don't take it to heart. You'll do better next time.　
别往心里去，下次你会做得更好的。
Take it easy. There must be some ways to compensate for it.
轻松一点，一定会有补偿的办法的。
Don't be so upset. Everything will be OK.
别这么发愁了，一切都会好起来的。
It's really hard for you.　
真难为你了！
It won't happen again.
不会再发生了。
Just forget it. Be a man!
忘了它吧，象个男子汉！