What are you going to do with it?
There are plenty of options. A screenplay, a comic book or strip, poetry, your alter ego, a novel. Maybe even inspiration for a painting. Still, most people do nothing.
Assuming you're a writer too, you went the fiction route (and probably the alter ego).
I believe I first attempted to write a book when I was seven or eight years old. My story wasn't bad in the premise. It reflected my own life, books I'd read, and recent news events.
Unfortunately my effort was abandoned for one major reason: I had no clue how to write. I believed that all paragraphs had to be exactly 4-6 sentences long. And I'd never heard of margins or the fact you could leave off dialogue tags.
When I discovered how to format, maybe a year or two later, my stories finally escaped being mere doodles on notebook paper and became words. (Notebook paper remains my favorite media.)
I won't pretend to have been a prodigy. My first efforts were probably much like everyone's. You should know the problems.
As I wrote my ideas began to develop and became better. They would change so quickly that often I would just have to start the story over. (They were innately long. I still struggle to write short stories. Or just finish a work at all.)
After that, there's actually not a lot. I wrote, and wrote, and wrote, and wrote, and wrote, and wrote. In between, I read mounds of books and drew character art. I never went to a workshop and my only book on writing was my grammar book. Other novels formed my style, etc.
Now, I consider myself born a story-weaver and dreamer, but I only call myself a writer because I've devoted myself to an unknown quantity of fiction. (I've probably passed the Million Words mark).
These past two and a half years, I've learned a lot about maturing my stories from the internet and Nanowrimo. Literary agents, other publishing people, and experienced creative writers have blogs that all have given me advice I desperately needed.
What remains is to create a polished manuscript and eventually find someone willing to publish it.
So how about you? Where have you come from as a writer?
P.S. This is my first attempt at this kind of writing post. Please feel free to give advice on where I have failed.
Thanks to Write a Better Novel for inspiring this post.