And some successful people pride themselves on how hard they work. There's a story that Jay Williams tells about Kobe Bryant. Jay is playing Kobe the next day

And some successful people pride themselves on how hard they work. There's a story that Jay Williams tells about Kobe Bryant. Jay is playing Kobe the next day and they both happen to end up in the same gym the day before. When Jay gets to the gym Kobe is already there working out. Jay works hard and sees Kobe is still there. Jay eventually wraps it up, while he sees Kobe still working out that evening. The next day Kobe has a great game, and after the game Jay asks Kobe something like, "Do you work out that long all the time?" (can't remember the exact question) -- to which Kobe says, "I just wanted to let you know that no matter how hard you work, I'll always outwork you". For a lot of successful people their joy is their work and they take pride in being great, but still working harder than everyone else.