1. Whenever I need to change lanes, I have this nasty habit of being cautious. That is: I move very slowly into the lane and sometimes I slow down a little while I do it because it feels intuitive to do so. But obviously this causes a problem for anyone that is a car length behind me in the lane I am pulling into because now they got to slow down for an extended time to avoid rear ending me. I've had people slamming on their horns when I do that and even had a car side swipe me while doing it (I was pulling in slowly but they were moving alot faster and I didn't notice soon enough)
2. When I see a can or cup of some beverage sitting around that is less than 50% full, I instinctively pick it up and toss it in the kitchen sink because I hate clutter and as far as I'm concerned, the glass is at least half empty so it might as well be empty. Sometimes it is somebodies drink that they only leave there briefly while they attend some errand and it bothers them. But in my defense, this habit was born of my mom's stupid habit of leaving almost-finished drinks sitting around everywhere and forgetting about them. So if this problem of mine ever bothers someone, I will tell them that it is all my mom's fault.
3. When preparing a meal (cereal, sandwich, whatever) I am too damn lazy to carry the food out into the dining room and prefer to just stand up and eat it at the kitchen counter at the same spot I prepared it, which is right in front of the silverware drawer and cupboard full of glasses and plates/bowls. And most of the rest of the kitchen counter is too cluttered to use. So then when somebody else needs to get into the space, I get all irritable because it is like my private space. But it is probably them who should be irritated at me.