The highest purpose of storytelling is to shift the perception of what's possible in the universe.
The writing process is
not
mysterious.
It is
uncontrollable.
You just think it is.
This book can help.
David Gerrold, award-winning screenwriter and novelist, gives advice for would-be science fiction and fantasy writers, covering such topics as setting, plot, character, and dialogue, as well as the mechanics of grammar, tense, sentence structure, and paragraph transition... and why the heck you're writing at all.