So, flow is a great stage.
You do not need to work to get stated. You just start. You do not find a lot of annoying resistances, you just start doing. I have pushed and pushed myself to enter flow with my work. To not make things harder or get in my own way. That is a big deal.
The process gets dramatically easier when I just start working. This takes some ramping up, as it definitely did for me. I do not obsess about working or not working. I do not cook or wash the dishes instead of working. I just start working. When this happens, a couple of things change. First of all, I feel less anxious because I am getting to the important things. Second of all, more of the really important work actually gets done. Third, I feel better for having done it. I would say that I am in the flow of writing each day too. It definitely flows.