The contemporary role of the preschool teacher is one where the preschool teacher is a reflective practitioner and action researcher who constantly reflects on his work and its improvement. It is important to review one's own interventions, to find ways to correct oneself and to base the improvement of practice on the results of the evaluation. Preschool teachers should not be teachers-lecturers, but curious observers of learning and their own teaching through the creation of a quality environment. The goal of the research work was to find out the contribution of reflection in order to encourage the development of a child's positive self-image. Based on various data, wanted to gain insight into the application of the teacher's reflection in everyday educational practice and as part of encouraging the development of the child's self-image. An effort was made to analyze in depth the teacher's views on reflection and how to use it, especially for the purpose of developing the child's self-image. The data was collected and analyzed using different methods and research phases: professional biography and key achievements in the career of the preschool teacher, analysis of the institutional environment; thematic analysis of the interview with the preschool teacher. The contribution of the teacher's reflection in encouraging the development of the child's image in this research speaks of a professional who constantly reviews his work and improves his professional practice in order to best meet the child's needs. The respondent states that reflection and self-reflection is important because it is the way in which the preschool teacher grows in his work, it is where he notices his strenghts and weaknesses that he can influence and work on and improve. Of the reflection techniques, the use of the photo/video documentation stands out the most. Namely, by analyzing photos and videos, the teacher sees children's behaviors, their thoughts, interests, and their positive and negative characteristics. In the conducted research, we see the importance of joint reflection, which represents the cooperation of professionals for the purpose of developing a positive image in children. The respondent encourages joint reflection among educators in the educational institution where she works in order to improve their educational work with joint efforts.