This paper explores teacher education through a self-study approach to researching practice. The development of the notion of tensions--in this case, the tension between confidence and uncertainty--is used as a way of understanding the complex nature of teaching and learning about teaching with a focus on teacher education practice. The paper is organised so that each section illustrates a particular concern or issue arising from an examination of practice by posing questions about the particular aspect of practice under consideration. The paper illustrates how the results of self-study research can help to build confidence both individually and collectively among the teacher educator profession, so that genuine change in teacher education practices might be enacted in teacher education programs.