FastCompany, one of my favorite magazines, has a wonderful article on the power and importance of saying “Thank you.”
From the article:
Thanking people isn’t simply a matter of common courtesy. A 10-year study by leadership experts Adrian Gostick and Chester Elton of 200,000 managers and employees showed that saying “thank you” correlates with bigger profits.
Here’s a 3 minute video from TED on the power of saying “Thank you”: