I've learned that while I have anxiety over many things, this sort of thing is not one of them. I'm weirdly relaxed, although I'm used to being shut up at home for weeks on end.
I'm also more of a prepper than I thought. I didn't think I was one at all, our cupboards are full of great ingredients so if you open them there's nothing obvious to eat, but I know I could bake and cook and we could survive for a while. I've even learned new skills making both jam and peanut butter from scratch with food already in the house.
I've also realised how crazy panic buying can be. I thought Christmas was bad. Christmas seems tame now.