For me, a lot of Discipline was very personal writing, like writing through and working out being inside this gendered body and also the compulsions of the body, the muting of the mind as driven by the body. My father had died some years ago so he haunts the book too, just floats through it ghost-like. But, the writing of every book is different for me. They are so like living creatures, these books, so I don't know what's carried over into the writing of the next things - except maybe that I'm best when I make my writing practice a routine.