Self-confidence has become a critical psychological construct in the lives of modern individuals, where pressure from social media, intense competition, and economic uncertainty often diminish self-belief, leading to escalating cases of anxiety and depression among young people. While prior research has examined self-confidence either from general Islamic perspectives or from specific Western frameworks, a substantial gap remains regarding in-depth comparative analysis and a holistic integrative model that synthesizes Martin Seligman’s positive psychology (particularly his theory of learned optimism and the PERMA framework) with Imam Al-Ghazali’s Islamic spiritual paradigm of tawakkal as articulated in Ihya’ Ulumuddin. This study aims to compare the similarities and differences between the two conceptions of self-confidence, integrate them into a Model of Optimism–Tawakkal Integrative Self-Confidence (MOTIK), and elaborate its theoretical, practical, and methodological implications for Islamic psychology. The study employs descriptive–interpretative qualitative library research through an in-depth review of primary works, including Seligman’s Learned Optimism (1991), Authentic Happiness (2002), and Flourish (2011), alongside Al-Ghazali’s Ihya’ Ulumuddin and Minhaj al-‘Abidin, complemented by relevant secondary scholarly sources. The findings indicate convergence in the centrality of cognitive optimism, the learnable nature of confidence, and the role of internal–external factors, but reveal a fundamental divergence in Al-Ghazali’s transcendent–spiritual dimension, which complements Seligman’s empirical–secular approach. The integration yields MOTIK, a holistic framework comprising three pillars: a positive–spiritual self-concept, an ikhtiar–tawakkal process, and a flourishing–ridha outcome. Implications include the enrichment of Islamic psychology theory, the development of CBT–tawakkal-based counseling interventions, and recommendations for empirical validation through psychometric construction and quasi-experimental testing.