For Winnicott, trauma is always about a failure of the environment/mother to provide care that is ‘good enough’ to sustain an active, creative relationship between inner and outer reality.
Kalsched establishes Winnicott’s core trauma theory — environmental failure producing a true/false self split defended by primitive dissociative structures — as the psychoanalytic basis for his own Jungian self-care system.
, The Inner World of Trauma: Archetypal Defences of the Personal Spirit, 1996thesis