Great thread.
I adore Christmas, and Christmas 2014 was fantastic, unfortunately Christmas 2015 wasn't...
Some changes I need to make are -
LOWER MY EXPECTATIONS! I don't need to have 100 members of extended family around to have a "perfect" Christmas - Focus on my own little family and put them first.
Do much more in between Christmas and new year - lots of winter walks/bike rides, a couple of meals out, a trip to panto etc.
Decorate outside the house more. The inside is like a grotto, outside looks like the Grinch is in residence.
Make more time to watch Christmas 24 - it's my guiltiest pleasure.
Take more time off work in the build up to Christmas.
Do a little bit more festive stuff in the build up to Christmas with my extended family (cousin and her kids)
On Christmas eve don't go to the local soft play centre for their Christmas party. It meant we didn't get home until 6.30pm. I like to be home earlier than this, watch carols from Kings, light the Christmas candles, potter round making a little buffet etc.