I guess this was bond to come naturally. After discussing addictions, I found myself observing other people's obsessions, because, again, all of us so called "rational beings" are burdened with maniatic, compulsive and obsessive behavior.
All of this started when the Principal Financial Administrator (who also happens to be co-owner of the company I'm currently working for) started to worry about the restroom keys. Each employee is suppossed to have his or her personal key, and there's another one in a special keychain for visitors only. All of a sudden, it became my responsibility to prevent anyone from taking that key. In consecuence, she started nagging me just because it is more comfortable for everyone to take the public keychain instead of carrying their own The top of it came when, at 9 a.m., when we never have any visitors, the damned keychain was not on the counter and she started wondering out loud, "what would happen if we had a customer". Immediatly, I showed her the especially-kept-for-emergencies extra pair I had been hiding for months. And then, she gave me this kind of angry look and said "Anyway, the keychain has to be here!" Worst of it, she's been asking every single day, as she passes by my desk, where the damn keychain is! Now that's what I call an obsession.
Personally, I believe that being obsessed is not always a bad thing. In my case, I'm obsessed with keeping my working space clean and neat, since it helps me to reduce my stress levels. Another obsession is punctuality. People who make me waste the only asset I cannot replace really drive me crazy. Personal space and boundaries are another thing that would deserve a post on its own, since I really go mad when people mess around with my personal stuff. But there are other obsessions that can even destroy the balance of daily life, like the "having the last word" obsession exemplified before, which prevents this people from cutting a win-win deal with a lot of people, thus making her lose a lot of opportunities.
I wonder how many obsessions my hypothetical readers may have.