That which is dreamed can never be lost, can never be undreamed.
This is how you do it: you sit down at the keyboard and you put one word after another until its done. It's that easy, and that hard.
People think dreams aren't real just because they aren't made of matter, of particles. Dreams are real. But they are made of viewpoints, of images, of memories and puns and lost hopes.
Start telling the stories that only you can tell, because there'll always be better writers than you and there'll always be smarter writers than you. There will always be people who are much better at doing this or doing that - but you are the only you.