I don't feel stressed personally, I quite like it. The only real stress is money but we make it work, and with the deals on veg in the days before Christmas, Christmas dinner will be no more expensive than our usual roast (FIL provides additional meats)
I do try make life easy for ourselves though, chicken instead of turkey, I start present shopping in September to spread the cost and wrap in batches when I get the urge at night, my present shopping is 100% done and all wrapped. Stocking stuffers are done and I've filled the stockings once to check they're both equal and everything actually fits.
I'm an overplanner, and every December Christmas becomes my fixation. I have multiple lists - present lists for everyone, they get checked off as purchased, crossed out when arrived and highlighted once wrapped. Our shopping for the week is planned and costed so I know almost exactly what I will be spending on food and from which shops.
All that's left to do is actually go shopping then the Christmas eve set up which doesn't take long. OH will pre-cook a couple of the meats a day or 2 before and does the Christmas dinner (he does all the cooking tbf), he doesn't find it stressful, but we just do a roast with extra meat and veg, no starter, dessert is trifle or yule log.
Now I'm all planned and ready I have zero things pulling me away from my (self employed) work, so I'll (hopefully) be able to sit and focus properly for the next week 😅
We're also only hosting FIL, who isn't fancy and is an easy guest