Christmas is a sign of peace and joy that comes after any trial, we can be secured in our faith. For Mary and Joseph, the thought of having a baby under the Jewish law was frightening. Mary could be charged with adultery and stoned to death. While God blessed Mary with a humble heart, she became strong in her fears in order to carry Christ the King. The great triumpant over this common fear, is the birth of Jesus.
So for us, I think we can remember that even in our trials and stress we can learn to see Christ, the Savior who redeems us from sin and even from trial. He saves. While there is evil and trial in this world, there is also good that arises from that evil and trial. Thomas Aquinas says that God allows evil to occur in order to bring out a greater good.
For us during Christmas, we die from all of our fears and trials, and rise with Christ in his birth in a greater peace.