How anal is too anal?

I couldn't leave today until I figured out how to do the pictures right. OK, it only took me around 12 minutes, but still, you gotta ask yourself sometimes: How anal do I really want to be? I guess its a good trait that I don't like to leave things until I understand them, and I am pretty good about being moderate about it, but still I wonder... especially when its something like I can't do my work until my desk is perfectly organized, and I can't leave on Fridays until the office is cleaned.