This chapter, “Building Self-Awareness,” explores essential techniques and tools for enhancing decision-making through increased self-awareness. It covers methods for recognizing and understanding personal biases, including reflection, journaling, feedback, and educational interventions. The chapter also addresses emotional regulation strategies such as cognitive reappraisal, mindfulness-based stress reduction, emotion regulation therapy, and biofeedback. Real-world case examples demonstrate how self-awareness improves decisions in personal finance, leadership, health, and professional development. By incorporating these practices, individuals can mitigate biases, manage emotional influences, and make more informed and effective choices, ultimately leading to better outcomes in various aspects of life.