Taiwan has over 10 000 convenience stores that employee should be asked keep smiling as a daily routine. To pay your emotion for earning wages that is called emotional labor by researchers. Besides most people like to see smiling face with the frontline service agents. Therefore even if they meet difficult customers whose smiling face always conceal their angry. This book described that how to enhance employees’ performance reduce their emotional dissonance and how to make a congruence with their job organization supervisor and group. The book also recommends Human resource managers could apply training strategy to mediate the relationship between emotional labor and job involvement.