One of the hardest things to do whether in poetry or prose in to convey a feeling. At first I was confused by your image, because of it's strong sexual allusion, bodies rising and falling in perfect unison. It's too bad that you feel that inner voice departs at daybreak, and that failing to resolve a wip is shameful....that voice should sing all the time. When you find youself staring at a spreadsheet, at two in the afternoon, and the voice mumbles in your ear, you are seduced away. It comes louder and louder until it grabs you. The words are suddenly there flowing like water: This dissonance is your baptism as a writer.