Professionalism is
not:
- Acting condescending to a customer.
- Sarcasm.
- Responding to threads in an aggressive (or passive aggresive) tone.
- Displaying your teen angst.
- Lacking in courtesy or respect.
Just thought I'd point that out, because it is so incredibly common in this day and age for everyone to try to push their problems onto someone else and find someone to blame, but really there is no one to blame but themselves.