All my pockets have a special place for things, and if I reach the usual pocket for, say, my phone, and it's not there because I've put it in another pocket, I panic.
Everytime I walk past a mirror, I stop to check my face for spots or blackheads. (Even at work or shopping or whatever, though more discreetly...)
I also cannot pick up a phone mid-ring.
I am a human spell check - I proof read everything I write.
Every single clock or watch in my possession is set 5 or ten minutes fast. It makes me move quicker before work.
+ Many, many more.