What contributes to longevity in an action learning (AL) set? What holds it together over a long period? The article relates the chronology and reasons why a self-managed set has flourished when so many sets of voluntary membership peter out. Major attributes of successful longevity are the adherence to strong ground rules and disciplined recruitment. The author, a member of the set, uses anecdotal data from interviews of existing and former set members to narrate picture of a group of action learners who attend set meetings regularly and enthusiastically. Another cause of longevity is the flexible employment of AL process serving the needs of professionally qualified people unstintingly learning from, and caring for, each other. (Contains 1 note.)