@Ormir: but that's not an embarrassing hobby or habit
However, what is an embarrassing habit is this: whenever I'm flying I'm paranoid about my plane tickets. I will pick them up from my bag every 5 minutes or so to make sure that I still have them with me. I will take a long hard look at them when I board the plane and put them back in the bag. Then, during the middle of the flight I will suddenly panic, convinced that my tickets are no longer with me despite the fact that my bag is safely tucked under a seat and neither I nor anyone else has been near it, and I'll feel forced to check that the tickets are indeed still there. They usually are. Then I have to check them at last once again before the plane lands. And it goes on and on and on.