Great post friend. I started on steemit all excited at the prospect people can earn real money doing what they love. I posted on a wide variety of things before I found my groove (which turned out to be fiction and stories). I can only add one thing to your post. When you find your place in steemit, don't forget it's a wider community. Yes you may enjoy writing stories and forget that you have other things to offer.
Maybe a good recipe or a beautiful photo. Remember not everyone will be obscessed with your particular focus. It may just be useful to step outside your comfort zones every once in a while.
Hugs.
J.