This paper documents a self-study research group's development and its effects on 11 participants. Drawing on the scholarship of the self-study tradition within educational research, we see teacher knowledge as an important and largely untapped source for the improvement of teaching. Positioning participants to look at the sense and selves being made on a continual basis is the task embraced by this self-study group. The paper reveals professional development risks and opportunities confronted by educators through vulnerably, accountably, integrally, and mindfully negotiating teaching-learning lives.