The best parts are

EMDR therapy. Apparently eye movements have a major impact on the ability to process traumatic memories with less intensity & can actually change the way they are stored.

The concept of the mind as a community with certain parts of your personality which act as first responders who work to shield & defend the damaged parts. These first responders also tend to prevent healing by trying to prevent us from facing or reliving of painful things which is necessary for integration. The concept of thanking the defensive parts for their efforts (however hostile they may be) to disarm them is pretty powerful.

There is a lot of discussion of how yoga & rythmic or ritual activities can help people gain bodily awareness which can open the door to facing & dealing with trauma.

Supposedly, similar healing can come from acting stuff out & supposedly from acting in general, but I have a hard time believing acting is the cure he claims given the insanity that is Hollywood. But everything is relative, so I guess "success" is often measured from where people are starting from.

He also talks about some sort of real time brain imaging which gives people a visual reference for tension vs calm, pain vs pleasure, anxiety vs focus, etc so that they can begin to navigate their mental & physical states with some frame of reference.

He quotes Hellen Keller's books a couple of times in reference to the idea that learning to put words to our experience is the process of bringing order to chaos, and is basically how "the self" emerges, which is interesting.

He also injects some stereotypical leftist political nonsense toward the end which is kinda par for the course. The book probably wouldn't have been picked up by the publisher without it 🙄