Pain is temporary. It may last a minute, or an hour, or a day, or a year, but eventually it will subside and something else will take its place. If I quit, however, it lasts forever.

"Tennis is a mental game. Everyone is fit, everyone hits great shots."

一有私念，就会迷惑昏庸；一耍脾气，处事就会偏颇无理性。

如果你不能保持灵活的思路，就会抓狂，忽视解决问题的其他可能性。

Don't wait until everything is just right. It will never be perfect. There will always be challenges, obstacles and less than perfect conditions. So what. Get started now. With each step you take, you will grow stronger and stronger, more and more skilled, more and more self-confident and more and more successful.