I've never been able to write poetry without having vast tracts of dead time. Poetry requires a certain kind of disciplined indolence that the world, including many prose writers, doesn't recognize as discipline. It is, though. It's the discipline to endure hours that you refuse to fill with anything but the possibility of poetry, though you may in fact not be able to write a word of it just then, and though it may be playing practical havoc with your life. It's the discipline of preparedness.