Girlfriend Lisa (an eternal optimist) recently sent me a link to this Web site (because she knows I'm an eternal pessimist at heart) and I could not stop laughing.

There are sure to be a few of these that belong hanging in your office.

My personal favorites:
"Burnout: Attitudes are contagious. Mine might kill you."
"Cluelessness: There are no stupid questions, but there are a LOT of inquisitive idiots."
"Indifference: It takes 43 muscles to frown and 17 to smile, but it doesn't take any to just sit there with a dumb look on your face."
"Get To Work: You aren't being paid to believe in the power of your dreams."

And, be sure to check out the "Pessimists Mug" on the same site. Hilarioius!