“We had people do this at Facebook and at Nationwide Insurance in the U.S. Every morning when they got to work, the very first task they had to complete for twenty-one days in a row was to write a single two-minute email praising or thanking one person that they know,” Achor explained. “The email could be as simple as ‘Thank you for helping me with my work yesterday’ or something more meaningful like ‘You’re the reason each day. You are my best friend here’ or ‘Thank you so much for covering for me when I had so much work going on yesterday.’
