THE MASTERY OF COMPETITION RULES, STRESS MANAGEMENT, CONFIDENCE AND CONCENTRATION OF THINKING ON DECISION MAKING. Quantum Journal of Social Sciences and Humanities, [S. l.], v. 3, n. 1, p. 59–68, 2022. DOI: 10.55197/qjssh.v3i1.110. Disponível em: https://qjssh.com/index.php/qjssh/article/view/110. Acesso em: 25 sep. 2025.