The purpose of this research note is to introduce and overview both the teaching and research applications of autobiographical essay writing. Grounded in occupational socialization theory and teacher reflection, the authors propose that autobiography can be a powerful tool in helping preservice and in-service teachers more deeply reflect on their prior socialization experiences, which may help them to better understand and be willing to critique their personal belief structures. The authors provide an overview of how autobiographical essays have been used and include recommendations for teacher education practice. From a research perspective, the authors argue that autobiographical essays provide a targeted strategy for collecting reflective data on individuals' background socialization experiences. Such data are critical for socialization scholars who are interested in understanding how teachers' biographies influence their current teaching beliefs and practices. Applications for physical education-adjacent spaces, including doctoral education, adapted physical education, and elementary education, are also discussed.