When I am stressed out or nervous or anxious or bored, I count. usually backwords. Now, since I know this is a behavior that is associated with autism, I do it in my head so no one will notice and think I am strange.
At work, I have a tendency to make little stacks of paperwork which seems to bother everyone around me.
The other habit I have, which is actually a non-habit, is I never put things back where they belong, so I am always misplacing things like my keys, wristwatch, glasses, etc. This, along with my habit of major multi-tasking, makes everyone aournd me think I have AADD.