This reflective journal explores the development of key personal and professional skills, including teamwork, negotiation, conflict management, and receiving feedback. Through self-assessment, peer feedback, and theoretical frameworks, the author identifies strengths and weaknesses, analyzes contradictions, and outlines a personal development plan to enhance these skills. The journal utilizes various theories and tools, such as Tuckman's Team Development Theory, Path Goal Theory, Interactive Bargaining Theory, Johari Window, and Thomas Kilman Instrument, to provide a comprehensive understanding of the chosen skills and their impact on personal and professional growth.