A Short Course in Human Relations

The list below appears in a number of places and I can't seem to find out the original author. Whoever it was, I think they are very clever and perceptive and I thank them for their effort. If anyone knows, please tell me so I can give due credit.

Can you work them into your discussions with colleagues, staff and family over the next week?

The 6 most important words:
"I ADMIT I MADE A MISTAKE."

The 5 most important words:
"YOU DID A GOOD JOB."

The 4 most important words:
"WHAT IS YOUR OPINION?"

The 3 most important words:
"WOULD YOU MIND?."

The 2 most important words:
"THANK YOU."

The 1 most important word:
"WE".

The least important word:
"I".