There are no carols, but here are the most important Nine Lessons, any of us will encounter this Christmas.
The UK's former representative to the EU, Sir Ivan Rogers spoke last week at the University of Liverpool's Heseltine Institute for Public Policy, Practice and Place.
He warns, "The (Brexit ) debate in this country — on all sides — continues to suffer from all manner of delusions, fantasies and self-deceptions.
"And the debate in the EU on the British question, insofar as there is one, suffers from complacency, fatigue and strategic myopia.
"We are in a bad way."
Warning: this speech is very long — but is worth the effort — and it should be read by anyone grappling with Brexit.