The Drama of the Gifted Child (Alice Miller)
I could call it a preparatory book for The Present Process. With reflections and clinical examples on how distancing ourselves from our own emotions in our early childhood makes the true self go to background. About how we are essentially constantly determined by our own history, if we ignore or idealize it, because we have continued to live in the unresolved, repressed situation of our childhood.
"We can't change our past at all [...] But we can change ourselves [...], recapture our lost integrity. We can do this by deciding to take a closer look at the knowledge stored in our body of what happened in the past and bring it closer to our consciousness" (Aliice Miller). And then explore which method or approach works for you.