All carers and therapists—will have had to deal with key attachment, separation, and loss issues at some time or other in their lives. Louis Cozolino argues that therapeutic work requires the inclusion of our personal experience, which is just as important as scientific evidence. Cozolino describes how, as an adult psychotherapist, he serves as "an external neural circuit or auxiliary executive system". He helps his clients to piece together their previously unarticulated stories from seemingly random clues to repressed traumatic memories and their sensory cues from the environment. J. Connor explains this commonly-used Neurolinguistic programming (NLP) process: Stories, analogies and parables are the best way of accessing unconscious resources and Erickson was a master of telling stories that not only engaged the client, but also held key to solving their problem. Indeed, the thinking behind NLP "parts reframing" and "neurological levels" change-work assumes that have different states or aspects, some of which may appear to be dysfunctional and even self-sabotaging.