Hello, I have a racing mind too. I also experience what I have named "Mental Nausea". There is a difference. I have learned to do a form of self taught meditation. I am odd, I listen to music with headphones and keep my eyes shut, I then concentrate on a scenerio in my head, one that brings my mind pleasure and redo it over and over, this will put me to sleep. To a normal person the music I listen to would disturb them, I just force all negative thoughts from my head. If I get into full blown Mental Nausea, I stop and literally start over from scratch. I hope this helps, you need to find what works for you. I still have nightmares and terrors, but not as often I don't think. Best of luck