Nice interview. I've heard from The Menprovement Podcast that Dr. Gupta Amygdala Retraining™ is also very effective for such things. The host had anxiety problems, but I think it was from an injury that ended his soccer career, not his parents.
I've used something called The Release Technique: Abundance Program, & a Taoist meditation practice called Inner Smile, but what helped the most was basically re-living my trauma & experiencing all the emotions I buried when I was a child. I've had a self-sabotaging thing going on my whole life, so I would reassure myself in the midst of re-experiencing the trauma that it wasn't my decision or fault, that I was powerless, & that I did not deserve such harsh punishment.
These were things I logically arrived on a few times before in my life, but what was different here was that I told myself that over & over, in the midst of feeling the trauma. Also, after listening to peaceful parenting stuff, & reading psychology stuff to be vague, I had a better understanding on why this was true.
That was more focused than The Release Technique, but as I went on, I used them all together along with EMDR I think it's called, which wasn't invented by whoever claims they invented it. It's another old Taoist technique, they just didn't call it that.
Emotional Intelligence is also another valuable book in this mix.