the fourth stage of analytical psychology requires the counter-application to the doctor himself of whatever system is believed in — and moreover with the same relentlessness, consistency, and perseverance with which the doctor applies it to the patient.
Jung establishes self-examination as the ethical cornerstone of analytic practice, demanding that the therapist submit to the same scrutiny imposed on the analysand.
, Collected Works Volume 16: The Practice of Psychotherapy, 1954thesis