To interpenetrate an entire human life with divine life, it is not enough to kneel once a year in front of the crib and let oneself be moved by the charm of the holy night. One needs to live one's entire life in daily communication with God, to listen to the words that God has spoken and that have been transmitted to us, and to follow these words.
God is the friend of silence. See how Nature -- trees, flowers, and grass -- grow in stillness; how stars, moon, and sun run their course in silence. The more we receive through quiet prayer, the more we can give in the activity of our daily lives. In essence, it is not what WE say, but what GOD says in us and through us. All our words are useless if they do not come from within.