Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful.

书是一份永远不会失去价值的宝藏。

一个人思虑太多，就会失去做人的乐趣。

The most important thing is to enjoy your sport. If you don't enjoy it, it's very difficult to achieve good results.

有时候你必须迷失自己才能找到自己。