Writing intrusive thoughts in complete sentences multiple times can serve as self-administered trauma therapy.

“And then if those intrusive thoughts are not only intrusive but they're also disturbing, in that case, you really want to put as much structure and thought, believe it or not, into what those thoughts are really about. Write them out on paper in complete sentences and maybe do that multiple times until the underlying emotions related to those thoughts really start to diminish. And by doing that, you're essentially doing your own form of trauma therapy, for lack of a better way to put it.”