Kirsten Grind and Katherine Sayre on Tony Hsieh's Mission - April 12, 2022 By Leslie Thatcher Published April 12, 2022 at 10:21 AM MDT Listen • 18:04 Wall Street Journal Reporters and Authors of the new book Happy at Any Cost Kirsten Grind and Katherine Sayre. The book details Tony Hsieh's mission to spread happiness and instill joy at work.