I came across the following in something that was sent to me. It is thought provoking.

• The six most important words in English language I was wrong – please forgive me
• The five most important words in English language You did a good job
• The four most important words in English language What is your opinion?
• The three most important words in English language Can I help?
• The two most important words in English language Thank you
• The least important word in English language I