I don't think you can ever do your best. Doing your best is a process of trying to do your best.
When you're a racing driver, you're always looking for the next corner, the next challenge.
不为热爱工作而只为金钱工作的人,既不太可能赚到钱,也不太可能在生活中找到乐趣。
保持饥饿,保持愚蠢。