A saint is a person who practices the keystone human virtue of humility. Humility in the face of wealth and plenty, humility in the face of hatred and violence, humility in the face of strength, humility in the face of your own genius or lack of it, humility in the face of another's humility, humility in the face of love and beauty, humility in the face of pain and death. Saints are driven to humbling themselves before all the splendor and horror of the world because they perceive there to be something divine in it pulsing and alive beneath the hard dead surface of material things -- greater and purer than they are.
Here in time we make holiday because the eternal birth which our loving God bore and bears unceasingly in eternity is now born in time, in human nature. St. Augustine says this birth is always happening. But if it happens not in me, what does it profit me? What matters is that it shall happen in me.