My go-to golf philosophy book is "Cheng Hsin: The Principles of Effortless Power":
> To relax, you must surrender your mind-even the notion that you have a mind. You will find that relaxing your mind is the same thing as relaxing your body. There should be no separation between your mind's activity and your feeling-awareness of bodily sensations and impulses. Feel yourself letting go so that your body isn't "held" so much--this requires doing the same thing with your mind. When you relax your tissues, nervous system, organs, the muscles around your organs, every-thing, then the energy will flow. It is this very relaxation that allows for the energy, or feeling-attention inherent in your body-being, to circulate, develop, and be utilized.
Don't know how this affects daily writing ;)