I'm not sure I have the stomach to try a psychedelic to try and treat it, as I've seen some success with exposure therapy, but the curiosity is there. I also had some pretty bad experiences with marijuana when I was younger (college), that have kind of scarred my ability to relax before taking any drugs.
There's a part in the book where it was either him on one of his experimental trips or maybe it was someone he interviewed, but while tripping, they were faced with some terribly scary images.
The person tripping said to their therapist guide that they were scared of whatever they were seeing and wanted to run away. The therapist suggested instead that they turn around and face head on whatever it was that they were seeing that scared them. Stare at it, observe it, take it in.
After they did so, the thing they thought they were so afraid of ended up not being so bad, and they sort of peacefully coexisted with it for a bit longer in the trip until the thing went away.
This is how I try and frame the scary things that run through my brain, it's normal to be afraid of bad thoughts, but also learning how to peacefully coexist with them is pretty healthy.