" This encounter, the very heart of psychotherapy, is a caring, deeply human meeting between two people, one (generally, but not always, the patient) more troubled than the other. Therapists have a dual role: they must both observe and participate in the lives of their patients. As observer, one must be sufficiently objective to provide necessary rudimentary guidance to the patient. As participant, one enters into the life of the patient and is affected and sometimes changed by the encounter. "

― Irvin D. Yalom , Love's Executioner and Other Tales of Psychotherapy