Give the other person a fine reputation to live up to.

“I may be wrong. I frequently am. Let’s examine the facts.”

be liberal with your encouragement, make the thing seem easy to do, let the other person know that you have faith in his ability to do it, that he has an undeveloped flair for it—and he will practice until the dawn comes in the window in order to excel.

Use encouragement. Make the fault seem easy to correct.

“I consider my ability to arouse enthusiasm among my people,” said Schwab, “the greatest asset I possess, and the way to develop the best that is in a person is by appreciation and encouragement.

Get the other person saying, “Yes, yes” at the outset. Keep your opponent, if possible, from saying “No.”

“Flattery is telling the other person precisely what he thinks about himself.”

Don’t criticize, condemn or complain.

Any fool can criticize, condemn and complain—and most fools do.