 Georgia football coach Kirby Smart has won two college football national championships. He knows something about leadership. But to be a good leader, he says, you must be willing to accept the costs. Number one, you will have to make hard decisions that negatively affect the people you care about. Number two, you will be disliked despite your best attempts to do the best for the most. And number three, you will be misunderstood and you won't always have the opportunity to defend yourself.