I have an orthopedic pillow that's made out of a sponge material. I have a plate in my throat and I have to be careful or I could end up with a bad neck in the morning. That pillow is a must everywhere I go.
The most important training though is to experience life as a writer questioning everything inventing multiple explanations for everything. If you do that all the other things will come if you don't there's no hope for you.
