IWSG: Writing In Formation?

Well, here is how August is going so far: I was on preliminary quarantine because I came in contact with someone whose whole family decided to get together for a party and with no safety precautions, thus contracting COVID-19. Fortunately, my sister and I tested negative. Then yesterday, Delaware was hit with tornadoes during Hurricane Isaias. Happy 2020!

The first Wednesday of the month is set aside for the monthly Insecure Writer's Support Group post. If you're a writer, you can join us by visiting the website. Also, stop by the founder's website: Alex J. Cavanaugh, and the hosts for the month to thank them for their hard work!

The question for the month comes with a quote: "Although I have written a short story collection, the form found me and not the other way around. Don't write short stories, novels or poems. Just write your truth and your stories will mold into the shapes they need to be."

Have you ever written a piece that became a form, or even a genre, you hadn't planned on writing in? Or do you choose a form/genre in advance?

I usually know the genre. Sometimes I write scenes that I think belong in one story, but as the story unfolds, the scene no longer works, so I save it until I find its proper place.

I used to try to write short stories, but I feel like they would be too long or rushed. I'm also terrible at standard poetry. I think I'm better at haiku and novels. But if a story comes to me that finishes before I expect it to, I won't stop it.

How about you?