The aim of this article is to explore several decades of experience of action learning and to distil lessons from that experience that are worth sharing with other practitioners. The method is to systematically collect the experiential data within three categories (sense-based, affective and cognitive data), interrogate them to draw out lessons and report those conclusions that have broader significance. The main conclusions are about (1) participants' readiness for action learning, (2) the development of people's abilities to self-facilitate and self-manage action learning and (3) the role of action learning in universities. (Contains 1 table and 4 notes.)