City Driver -
This board, so much like UPS in general, life in general, has a few constants; If you show that you are able to be rattled, you will be rattled. (Someone here has a better quote, but I'm lazy)
If you let things bother you, others will come & bother you just for the sake of watching you have a meltdown. I know that, for myself, I had a very freeing experience at UPS when I just started doing as I was told and stopped taking anything personally. I also take very little seriously, which helps quite a bit.
With all that being said - It is really, really creepy knowing you sit at your window all day looking for UPS drivers to screw up.