Same thing used to happen to me when I took psychometric tests or plowed through recovery workbooks (I've done two dozen). I still have a , and they rarely agree on much of anything. But Acceptance & Commitment Therapy (ACT), Dialectical Behavior Therapy (DBT), Mind-Body Bridging Therapy (MBBT) and other therapies built a "driver" who can pull over and intervene. (The driver is likely to have different point of view, as well.)
Early life trauma may induce Complex Post Traumatic Stress Disorder and (in my reply to the OP on that Reddit thread) to try to deal with the CPTSD by protecting the abused and/or neglected / abandoned child from the overwhelming terror of realizing what the hell is going on in a world where he or she is fully dependent upon others for his or her very survival. Which may ultimately lead to a collection of Personality Disorder traits called Borderline (or Dissociative Identity) PD to "structuralize" that splitting. And those trait systems get "stored" in various default mode networks that make up an Internal Family System in the brain.
See The Abused Child's Awful Dilemma and .
A 21st Century for Someone with Untreated Childhood Trauma... because IME there's a LOT one can do without spending a fortune on psychotherapy, as well as to speed up the process if one is in therapy or at least at the fourth of the five stages of therapeutic recovery.
References & Resources:
Section One: Basic explanations & recovery activities
Section Two: More advanced
Section Three: Neurobiology
Section Four: BPD as an Upshot of CPTSD
Section Five: Critical Thinking
Section Six: Workbooks
Section Seven: Workbooks Specifically on Anger Processing