Leadership can be interpreted as the way a person sees himself as a reflection on his own behavior and relationship with others. The two main attributes of a leadership system are leaders and their followers. The dynamics of the relationship between a leader and his followers is often an indicator of the quality of leadership. Incidentally, the dynamics of this relationship will most likely be influenced by self-concept. Therefore, it is possible that the personal identity of the leader and followers can act as both a mediator and a moderator of the interconnectedness between leaders and followers and how they behave to build the leadership system (Knippenberg, Cremer & Hogg, 2004 ). The objective of this essay is to discuss the effect of youth personality development on the quality of leadership in the adulthood stage. Furthermore, this essay will discuss models, theories, and opinions given on the topic. First of all, to define how one's personal identity can influence the quality of leadership, it is essential to understand what effect personal identity has on a person. Personal identity is the core of a person's reasoning, emotions, and behavior. Therefore, personal identity can influence how followers perceive their leaders and vice versa. This observation plays an important role in the foundation of the leader-follower relationship (Hanges, Lord, & Dickson, 2000). The significance of this observation can be tested using categorization theory. Sulsky, Brown, and MacDonald (2008) explain that this theory assumes that people rely on symbols, structures, concepts, etc. (prototypes) to understand the work/study environment, and these prototypes play an important role in the categorization of the leader. Consequently, leadership, from the perspective of Categorization Theory, can... middle of paper... an identification. In E. T. Higgins & A. Kruglanski (Eds.), Social psychology: Handbook of basic principles (pp. 777–798). New York: Guilford.• Basso, B. M., & Basso, R. (2008). Bass's leadership handbook: Theory, research, and managerial applications. New York: Free Press.• Epitropaki, O., & Martin, R. (2004). Theories of implicit leadership in applied contexts: Factor structure, generalizability, and stability over time. The Journal of Applied Psychology, 89, 293–310. • Reichard, R.J., Riggio, R.E., Guerin, D.W., Oliver, P.H., Gottfried, A.W., & Gottfried, A.E. (2011). A longitudinal analysis of the relationships of adolescent personality and intelligence to adult leader emergence and transformational leadership. The Leadership Quarterly, 22(3), 471-481.• Leary, M. R., & Tangney, J. P. (2003). Manual of self and identity. New York7 The Guilford Press.