This paper defines the concept of (self)reflection and professional development and their interrelationship. In their daily work, educator apply the process of (self)reflection through evaluations, assessment and analysis of his actions. He ask questions about how he actions, as well as why he actedth at way, and what he could have done better. Wher conducting (self)reflection, he look at the problem from several perspectives. Educator reflective practitioner has the characteristics of objectivity and flexibility in approaching the process of (self)reflection. Furtherrmore, only motivated educator can apply reflective practice in an effective way, which results in creating a sense of his own effectiveness in solving problems. The end result is the implementation of positive change sin practice. (Self)reflection allows educator greater efficiency and a deeper understanding of his own teaching style. It affects the job satisfaction of educators and improves the quality of teaching. Educators become more satisfied with his work and has a lower level of stress. Reflexive practice is an effective way to improve practice. (Self)reflection is the foundation, but at the same time an effective method for the professional development of educator. Professional development represents the training of educator through different areas skill, values and practice. Educator, in professional development in the concept of (self)reflection, focus on the following; he emphasize thinking as a central part of reflective practice in which he developself-awareness that refers to conscious consideration of oneself, one'swork, behavior, understanding the consequences, and questioning personal beliefs and actions. (Self)reflection changes the approach to learning, teaching and decision-making processes.