No matter what we're trying to accomplish, there's always a barrier of some kind to overcome, and it's often something over which we have no control. Instead of focusing on the barriers, let's work to become so good that we'll succeed no matter how many bad calls the ref may throw at us.

QBQ! The Question Behind the Question: Practicing Personal Accountability at Work and in Life (ed. Penguin, 2004) - ISBN: 9781101203019