I spell things when I am nervous/anxious. Like if I am going to be late to work, I will have the sentence "I am going to be late to work" in my head and then I'll spell it out over and over until I get to work. Also, when I type up a purchase order that I am nervous about, I'll spell the entire thing in my head. From our company name at the top to my contact information down at the bottom. It's the strangest thing. It's very calming for me.
Also, when I leave the house I have to check everything (stove, curling iron, coffee pot, etc.) to make sure they are off at least twice. It can be quite annoying when I am in a rush.