@[email protected] My personal solution to this, when I want to slow my brain down, is to utilize those rare abilities to get myself intentionally stuck in thought loops, for example, every thought that comes to me, I imagine I put it in a box or book and line it perfectly next to the other boxes and books, and I keep doing that for dozens of times until I start running out of thoughts, at which I start focusing on just staring at those imaginary lined up books or boxes in an imaginary empty room lit only by candles. I never run out of random thoughts to be fair, and many of them re-appear again and again, but sitting there just repeating those cycles long enough (up to an hour or two sometimes) allows them to slow down a little, and I usually feel better afterwards. If some thoughts are relevant to my life I may write them in a real notebook or text file to soothe myself into knowing that I won't miss that thing, I'll just come back to it later.

This is what works for me, sometimes, each mind is unique so your mileage may vary.