“…Since the publication of Lyubomirsky et al's (2005) article, which according to Google Scholar had 3086 citations as of May 7, 2019, the "happiness pie"-including the relative proportions of its components, and especially the claim that intentional activity is a far more important determinant of well-being than life circumstances-has become a key element of the discourse surrounding well-being. In the academic sphere, this model has been cited by scholars working not only on topics that might be considered as the traditional domain of positive psychology, such as employee well-being (Page and Vella-Brodrick 2009), the relation between pleasure and engagement (Schueller and Seligman 2010), or interventions to enhance happiness in normal populations (Proyer et al 2013), but also in research areas as diverse as psychotherapy (Rashid 2008), aging (Butler and Ciarrochi 2007), consumer behavior (Hudders and Pandelaere 2012), negative emotions (Jordan et al 2011), self-care for psychologists (Wise et al 2012), heart disease (Huffman et al 2011), tourism (Nawijn and Mitas 2012), and intellectual disability (Dykens 2006). In wider society, the happiness pie has been a prominent element in the popularization of positive psychology, especially in the areas of happiness-related coaching, self-help books (e.g., Achor 2010;Fredrickson 2009), and other "personal development" products and services that have sprung up on the periphery of this new subfield.…”