This research introduces the Self-Moral Actualization (SMA) scale, a novel tool designed to measure the integration of personal moral values, ethical decision-making, and self-awareness. The study employs qualitative and quantitative methodologies, including literature reviews and expert interviews, to identify SMA's core aspects: value congruence, moral reflection, and adaptive morality. The scale's construct validity is affirmed through exploratory and confirmatory factor analyses using diverse professional samples. Structural equation modeling reveals a strong correlation between emotional intelligence and SMA and SMA's significant predictive power for ethical decision-making and leadership behaviors. The SMA scale is reliable and valid, providing valuable insights for academic research and practical applications in ethical behavior and leadership development. Implications for academic research and practical organizational and leadership development applications are discussed, highlighting the scale's potential for enhancing ethical behavior and leadership effectiveness.