“Positive Thinking and Its Relationship to Psychological Happiness Among Students of the Department of Physical Education and Sports Sciences - College of Education for Girls”. College of Basic Education Research Journal 19, no. 21 (August 1, 2023): 311–328. Accessed October 24, 2026. https://berj.uomosul.edu.iq/index.php/berj/article/view/38726.