In this article, we focus on an analysis of critical issues in supporting teacher educators conducting a self-study. As data, we have used the digital logbooks written by the participating teacher educators, the outcomes of the interviews we held at the end of the support process, and of a follow-up questionnaire answered by the participating teacher educators six months later. We have found seven issues critical to enhancing the chances of self-studies being beneficial to the practice of teacher education as well as to the further development of a knowledge base for teacher education. In addition, our study points to four themes for further attention and research. (Contains 2 tables.)