Greet everyone you meet as if he were very special. Do this with strangers and longtime acquaintances alike. If you can't muster the necessary enthusiasm naturally, tell yourself that each person you meet is a dear childhood friend whom you haven't seen in decades.
Be free with a "thank you."
Find something to admire. Compliment something about everyone you meet. Your compliments need not be about big things -- sometimes we score more points by noticing the little things that everyone else tends to overlook.
Praise people's efforts. Humans have an unquenchable need to be reassured that they are worthy of praise. If you feed this need in people, they will repeat whatever behavior earned them your praise, hoping that they will get more.
Pay attention. Listen to people
A heartfelt "thank you" lets people know that we appreciate what they've done, which boosts their faith in their own importance and competence. They feel better about themselves and then are drawn to us for making them feel that