“Hail and blessed be the hour and the moment when the Son of God was born of the most pure Virgin Mary, at midnight, in a stable, in Bethlehem, in the piercing cold. In that hour vouchsafe, O my God, to hear my prayer and grant my desires,through the merits of Our Savior Jesus Christ,and of His Blessed Mother. Amen."
You're all a day late, and it probably won't work now, but say this 15 times a day until Christmas day as a novena. It's indulgenced, and it's a great means of preparing oneself.