Thinking about the time my 7th grade math teacher called me ‘mediocre’ once so I wrote a short story about finding a lost child, letting her hide in the backyard, and burying her when she fell out of our tree and died.
I left it in a pile of make up work for her to find and she believed it enough to call the police and have them search for a dead body.
That is the day I consider my writing to have gone from “hobby” to “skill”.