Speak to people, there is nothing so nice as a cheerful word of greeting.
Smile at people. It takes 72 muscles to frown & 14 to smile.
Call people by their name. The sweetest music to anyone's ear is the sound of his/her own name.
Be friendly and helpful. If you have friends, be friendly.
Be cordial. Speak and act as if everything you do is genuine pleasure.
Be interested in people; you can like almost everybody if you try.
Be generous with praise, cautious with criticism.
Be considerate about the feelings of others; it will be appreciated.
Be thoughtful of the opinions of others. There are usually three sides to a controversy; yours, the other person's and the right one.
Be alert to give service. What counts most in life is what we do for others. Add to this a good sense of humour, a big dose of patience and a dash of humility and you will be rewarded manifold.