Effectiveness of an MPPI: Gratitude-Based Spiritual Group Guidance Program (GSGGP) Adapting the Existential Gratitude Scale to Turkish: A Measure of Gratitude in Painful Times The Effect of Anger, Gratitude and Psychological Well-Being as Determinants of Forgiveness in Adults Qualitatively Exploring the Relationship among Gratitude, Spirituality and Life Satisfaction in Turkish-Muslim Children