Steven Kramer

Our research shows that inner work life has a profound impact on workers’ creativity, productivity, commitment and collegiality. Employees are far more likely to have new ideas on days when they feel happier. Conventional wisdom suggests that pressure enhances performance; our real-time data, however, shows that workers perform better when they are happily engaged in what they do.

Teresa Amabile and Steven Kramer, authors of The Progress Principle (affiliate link), in a New York Times op-ed piece, Do Happier People Work Harder?