Lawnmower engines have a governor that prevents the rotations per minute from getting too high. And, of course, lawnmower engines have spark plugs.
Sometimes my brain races about stuff, then I feel miserable. It is like an engine without a governor.
Sometimes thoughts come into my mind like sparks from a spark plug. My cognitions are like rapid-fire ignitions at times like that.
On occasion, I decide to try my very best to not think for just two minutes. (Unplug my spark plug.) It seems do-able. And, when I succeed, it turns everything for the better, and I no longer feel miserable. I then go quite awhile without racing thoughts, I can think better, and I have more energy. I get a lot of "bang for my buck" from those two minutes of not thinking.