Emmons, R. A., &Crumpler, C. A. (2000). Gratitude as a human strength: Appraising the evidence. Journal of Social and Clinical Psychology, 19(1), 56-69.

Gratitude is an emotional state and an attitude toward life that is a source of human strength in enhancing one’s personal and relational well-being. In this article, we first explore the theological origins of gratitude as a virtue to be cultivated in the major monotheistic traditions of Judaism, Christianity, and Islam. Each tradition emphasizes the development of gratitude as a path to a good life, and prescribes approaches for practicing. Gratitude is explored further in the context of psychological theory and research. Empirical research linking gratitude with well-being and goal attainment is presented and discussed. Finally, future research questions and a tentative research agenda are presented.

Emmons, R. A., & Crumpler, C. A. (2000). Gratitude as a human strength: Appraising the evidence. Journal of Social and Clinical Psychology, 19(1), 56-69.

https://doi.org/10.1521/jscp.2000.19.1.56