You are never too old to set another goal or to dream a new dream.
I think the best thing you can do is to be grateful for what you have.
任何一样东西，你渴望拥有它，它就盛开。一旦你拥有它，它就凋谢。
The greatest victories come after the toughest battles.
我不是来当最好的，我是来当唯一的。