Ask not, doubt not. You have, my heart, already chosen the joy of Advent. As a force against your own uncertainty, bravely tell yourself, “It is the Advent of the great God.” Say this with faith and love, and then both the past of your life, which has become holy, and your life’s eternal, boundless future will draw together in the now of this world.
For then into the heart comes the One who is Advent, the boundless future who is already in the process of coming, the Christ, who has already come into the time of the flesh to redeem it.
–– Karl Rahner, S. J.