Anyone who makes art, writes, or designs over a long period of time develops a process. Having a process is critical on the days I don’t feel like writing or I am struggling with the words. I look at where I am at in the process and do the next thing.
I never thought of writing with pen and paper for the first draft as a way of not editing while you write. I think I’ll try it. I usually just think of it as vomiting the words onto the page and editing later.