Being professional has always meant taking one's obligations
seriously, but at one time being professional was also assumed to
mean being stiff and formal. A lot of people still have that idea in
their minds.
I have been called 'unprofessional' for a lot of silly reasons, like
wearing a shade of pink lipstick that someone thought was too vivid, or
for telling the truth when no one else in the room wanted the truth to
be told.
Gradually I realized that people throw the term 'unprofessional' around for several different reasons.
There are behaviors, of course, that are actually unprofessional and
that will tarnish your reputation. We'll talk about seven of them in a
minute. 
