I am an unusual writer. Unusual for many reasons (not the least of which is my ability to sing "Sweet Home Alabama" backwards, complete with subliminal messages about the Underworld of Hades), but for two more than any. First, I've never had writer's block. Ever. Second, I crank out "good" work quickly. The last script I optioned I wrote a first draft in three days, did the rewrites in under two. The last book (about 600 pages when published later in the year), I finished in under a month. Complete with rewrites.
Now, there are thousands upon thousands of books out there that tell you how to write. The Magic of Writing: How to Write and Publish the Book that is Inside You, is one of them you can get at Amazon, along with about to bizkillion other offerings in this genre. And they all have one thing in common:
They all get it wrong.
There are four things, and four things only, that you need to do if you want to "be" a writer. Coincidentally, they are the four things that I have done to never have writer's block and knock off good writing without needing a decade for each book. Here you go, free of charge:
1) Writing is not brain surgery. No one dies if you make a mistake. In fact, some "mistakes" will lead you on wonderful journeys you never would have intentionally thought of. So don't be self-critical. This is the secret to never (and I do mean never) having writer's block: just write. Some of it will be crap. That's fine. You'll fix it up on the rewrite. Don't listen to the voice inside you that insists every sentence and every word has to be "perfect" - there's no such thing.
2) That being said, don't force it. Enjoy it. You have an idea, you don't know where to go with it... well aren't you the lucky one?! Walk around the park, go to the mall, pretend to sleep... let the idea roll around in your brain and enjoy it. You'll be surprised how many things start popping in. "Well, what if she wasn't a fairy, she was a ghost? Or even better, the ghost of a fairy?!" (I smell Nobel prizes here.) Seriously. Part of the fun (one of the best parts) of being a writer is letting an idea percolate until it's just... that... time... Then BOOM! An explosion of creativity. But don't confuse this waiting time with writer's block. It's part of writing: you are planning, the same way an architect plans a house out in general outlines in his head before ever setting pen to paper on a drafting table.