Good article, liked it as it encouraged me. Sometimes I really feel like writing, sometimes I find it hard to get along, in these cases I turn to reading instead. And walking and while walking all the ideas come easily, so being refreshed and full of energy writing for an hour or longer seems to be pretty easy. The goals mentioned here are realistic, not too much …
And sometimes I feed my Blog first or update an entry and when good enough I upload it to Medium. I find blogging is a good exercise for regular writing with ease and then an article for Medium follows out of longer posts.
Good luck and take care, fellow writers …