Our reading in church today will be the nunc dimitis, Simeon's song from Lk 2:
God, you can now release your servant;
release me in peace as you promised.
With my own eyes I've seen your salvation;
it's now out in the open for everyone to see:
A God-revealing light to the non-Jewish nations,
and of glory for your people Israel. (The Message)
After Christmas we rest in God's promise believing that in Jesus God has fulfilled all his promises. After Christmas we live in the 'God-revealing light' (what a great phrase) and encourage all others to join us there.
A blessed Christmas results in a life that is both blessed and a blessing.