7. “Even if I have already peaked, I have to believe I can improve.” (Rafael Nadal)

Success may lead to arrogance and make you think that there’s nothing left to be achieved. In other words, when you’re successful, there’s a chance to be hit by complacency. Maybe you start wondering if you’ve learned pretty much everything that was required to be where you are today.

Successful and wise people keep reminding themselves that, no matter how far they’ve come, there’s always room for improvement. There’s a saying you’ve probably heard or read before: If you’re the smartest person in the room, maybe you should consider getting into some other room.