Like everyone else, I used to miss a lot of Christmas days and weekends because of shift work. I hated it so much that I decided to start my own business which I ran for 30 odd years. The problem was that my wife and I then missed out on a whole lot more as we had to put that before family gatherings etc. Life is wonderful now we are retired. I only wish I'd done it when I first left school.
Happy Christmas to everyone whatever you are doing, and don't eat and drink too much.