To me every human is a divine being. I treat everyone with utmost respect and be a good finder, not a fault finder. When you meet someone imagine that it is your first and last time to meet the person. Make others like themselves a little bit more and they will like us forever. Say good things to everyone you meet, remember their names and call them their names even if they are general worker.
Be genuinely interested in everyone you meet. Be an interactive listener. Let them talk about themselves. Let your friends excel you do not excel your friend. Always appreciate, acknowledge and do not criticise when you meet a person. Whenever you meet someone always find something nice about them to compliment. Treat others better than you want to be treated. Smile genuinely. Smile with your eyes and your body. Find something good about others and say it out.