AllBook ReviewHappiness Exercises (Book Review) Positively Happy by Sonja Lyubomirsky and Jamie Kurtz by Derrick Carpenter November 22, 2009 by Derrick Carpenter November 22, 2009 Another workbook in the series presented by Robert Biswas-Diener’s Positive Psychology Services, Positively Happy: Routes to Sustainable Happiness is a superb workbook. Sonja Lyubomirsky and Jamie Kurtz have culled positive…