Process of Poetry

I am still editing. And it is difficult. I am still working on the critical component of my M Res, and compared to that, editing is a doddle. I don't know how to 'justify,' critically speaking, what I've written, or the ways in which I have written it. I am struggling to define my own personal ethic, in terms of writing, so that someone else can understand it, or at least have some sense of my process. But how can I explain something that I am only just beginning to trust and rely on myself? I know when I draft is 'done,' when I can't do any more to a piece of writing for the moment,  and I know when I am ready to work on it again, because my brain itches. Right now, my brain is so tired that the itching ain't happening. I have successfully titrated myself off of Pregabalin, which didn't work its promised magic on the pain, but I am not sleeping well, in part because I need to get writing done and I can't relax. I'll try to have a nap, and see if I can feel the itching in my head a bit more clearly after that.