A good friend forwarded me a very moving story today. Please take the time to read it--it is so sweet. (Warning, you may tear up so perhaps read it at home, not at work and then have to deal with a tear drop running down your cheek at work.)
My parents always, always taught us to be kind to everyone. It doesn't matter who they are, what they can do for you, what they look like, it simply doesn't matter--you are kind to those around you. As this story so movingly demonstrates, you never know where a person is going to or coming from. We all want to be treated with kindness. Lead by example and be kind to those around you.
Live the Golden rule: do unto others as you would have others do to you.