A/N: Spoiler alert on Gone With the Wind and How I Met Your Mother.
Maybe it starts out with nothing more than a thought.
You find a book, a movie, or a television show you love but the ending was… disappointing. So, inside your own head, you change it. Rhett doesn´t leave Scarlett. Barney and Robin doesn´t get a divorce.
You find that the idea inside your own head isn´t concrete enough, so you write it down.
And maybe the ending of the story wasn´t the problem. Maybe there was a character you didn´t like, a choice you didn´t agree with. Or maybe nothing was wrong. Maybe you just wonder… what if?
Hell, maybe you aren´t even that interested in the story. Maybe it´s the universe you love. Maybe you´re writing a story of the first muggle-born who´s elected Minister of Magic.
You finish your story.