OP is saying that it is the trauma that causes the person to “zone out and sleep walk through life”, not the resolution. He’s comparing psychedelics to any more direct resolution of the trauma itself in that they both wake the person up. In other words, if you’re zoning out you have two choices: take psychedelics or just fix the trauma that is causing the zoning out in the first place.
A dozen hyphens might help:
“...resolving trauma-that-causes-a-person-to-zone-out-and-sleep-walk-through-life can have equivalent effects to psychedelics.”
A dozen hyphens might help: “...resolving trauma-that-causes-a-person-to-zone-out-and-sleep-walk-through-life can have equivalent effects to psychedelics.”