1. It takes character and self-control to be understanding and forgiving.
2. Don’t criticize, condemn, or complain.
3. Give honest and sincere appreciation.
4. If there is any one secret of success, it lies in the ability to get the other person’s point of view and see things from that person’s angle as well as from your own.
5. Arouse in the other person an eager want.
6. Become genuinely interested in other people.
7. Smile.
8. Remember that a person’s name is to that person the sweetest and most important sound in any language.
9. Be a good listener; encourage others to talk about themselves.
10. Talk in terms of the other person’s interests.
11. Make the other person feel important.
12. Hatred is never ended by hatred but by love, and a misunderstanding is never ended by an argument but by tact, diplomacy, and a desire to see the other person's viewpoint.
13. I judge people by their own principles, not by my own.
14. Show respect for the other person’s opinions; never say, “You’re wrong.”
15. By fighting you never get enough, but by yielding you get more than you expected.
16. If you are wrong, admit it quickly and emphatically.
17. A drop of honey catches more flies than a gallon of gall (or resentment).
18. Try honestly to see things from the other person’s point of view.
19. Be sympathetic with the other person’s ideas and desires.
20. Begin with praise and honest appreciation.