IV. Be a Leader: How to Change People Without Giving Offense or Arousing Resentment
Principle I: Begin with praise and honest appreciation.
Principle II: Call attention to people’s mistakes indirectly.
Principle III: Talk about your own mistakes before criticizing the other person.
Principle IV: Ask questions instead of giving direct orders.
Principle V: Let the other person save face.
Principle VI: Praise the slightest improvement and praise every improvement. Be “hearty in your approbation and lavish in your praise.”
Principle VII: Give the other person a fine reputation to live up to.
Principle VIII: Use encouragement. Make the fault seem easy to correct.
Principle IX: Make the other person happy about doing the thing you suggest.
The message I got here was not making a big deal about mistakes. Lift up the opponent. Be positive about it.