Pbutton, if you aware of it so consciously, you are definitely not "that person." And you obviously aren't to be so stressed over it...I know your T wouldn't want you to be.
I think in some of these examples, like the girl showing up late and feeling entitled, these individuals are probably missing out on things like basic courtesy and have a hard time in life. While I would feel upset they were messing with my time, I would also be grateful I wasn't that unaware of myself, because that must be a bad, painful place to be in. She has to struggle in other areas, too...just my 2 cents. I think Hankster was alluding to some of this in his posts.
No one has to agree or disagree with what I just said. I can be Switzerland.