I recently found something I used to have on my office wall years ago. The copy is in rough shape so I'll type it out (it's kind of long but worth the read):
The Art of Getting Along
Sooner or later a man, if he is wise,
discovers that life is a mixture of good days and bad,
victory and defeat, give and take.
He learns that it doesn't pay to be a sensitive soul-
that he should let some things go over his head
like water off a duck's back.
He learns that he who loses his temper
He learns that all men have burnt toast for breakfast
now and then, and that he shouldn't take the other fellow's
grouch too seriously.
He learns that carrying a chip on his shoulder is the
easiest way to get into a fight.
He learns that the quickest way to become
unpopular is to carry tales and gossip about others.
He learns that most of the other fellows are as
ambitious as he is, that they have brains that are as
good or better, and that hard work, and not
cleverness, is the secret to success.
He learns that it doesn't matter so much who gets
the credit so long as the business shows a profit.
He comes to realize that the business could run
perfectly without him.
He learns to sympathize with the youngsters
coming into the business, because he remembers
how bewildered he was when he first started out.
He learns not to worry when he does not make a
hit EVERY time, because experience has shown if
he always gives his best, his average will break pretty well.
He learns that no man ever got to first base alone and
that it is only through cooperative effort that we move
on to better things.
He learns that the fellows are not any harder to get along
with in one place than another, and that "getting along"
depends about 98% on himself.