Positive psychology arose in the late 20th century as a hopeful corrective to psychology’s traditional focus on pathology, gaining momentum when Martin E. P. Seligman, in his 1998 APA presidential address, called the field to study not only what goes wrong in life but also what enables individuals and communities to flourish. Together with Mihaly Csikszentmihalyi, he articulated its core principles in 2000, emphasising the scientific study of positive emotions, positive traits, and positive institutions, while Csikszentmihalyi’s concept of flow (1990) described the deeply engaging state in which people are fully absorbed in meaningful, challenging activity. Alongside them, Ed Diener’s work on subjective well-being (1984) clarified the role of life satisfaction and positive affect, Carol Ryff (1989) articulated dimensions of psychological well-being such as purpose and personal growth, Christopher Peterson and Seligman (2004) mapped universal character strengths and virtues, and Barbara Fredrickson (1998; 2001) demonstrated through the broaden-and-build theory how positive emotions expand cognition and build lasting personal and social resources. Together, these contributions formed a science grounded in evidence, balance, and human potential. From a Christian perspective, positive psychology resonates with Biblical themes that affirm human dignity and flourishing under God, such as Jesus’ declaration that he came so that people “may have life, and have it abundantly” (John 10:10), Paul’s exhortation to dwell on what is “true… honourable… just… pure… lovely” (Philippians 4:8), and the scriptural vision of virtues like hope, love, perseverance, and gratitude (1 Corinthians 13:13; 1 Thessalonians 5:18), suggesting that cultivating strengths, meaning, and joy is not self-centred optimism but faithful stewardship of God-given capacities. As a result, a Christian positive psychology can offer profound value for personal well-being, enhancing resilience, purpose, relationships, and mental health, while also contributing to societal health by informing education, leadership, healthcare, and public policy in ways that foster trust, compassion, civic engagement, and the common good.