When I was seven I developed a terrible case of insomnia. It got so bad that my parents eventually took me to the school counselor (I doubt she had any real training as a psychologist) and she told me to make up stories to tell myself and that would help me go to sleep. This worked on and off over the years. When I reached my late forties, I realized I had a thousand stories in my head and maybe I could write some of them down. So I took some classes, some workshops and eventually was able to publish some of them.
I still have a million stories in my head. My husband only has to say something like, "My father made us all get up at seven and watch a dog on the Today Show who was supposed to be able to talk" and I'm off. I can hardly wait to begin that story and find out what happened. That's why I love writing flash pieces and very short stories. You can be onto the next one in a week or two.
Is your head filled with stories? How did it begin for you?