Everyone is a leader in some capacity because we have influence (even if only a little) over other people. And it's a bit sobering to think that your influence in another person's life can impact their growth and success as a person. In other words, people's lives can be better because of you. 

Do you really want to be the kind of person who thinks they have it all figured out, the person who has no weakness, who thinks they are perfect? Do you really want to be the arrogant one in the room? Admitting weakness is not weak; it's humble. And it's absolutely required if you're going to truly succeed.