From author Bob Mayer:
A story is a living, active world you invent. Imagination is essential.
In some ways a story is like a chess game in that you have to be able to think half-a-dozen to a dozen steps ahead for all of your pieces (characters) while at the same time considering what the other guy might be doing (the limitations of your plot; the point of view chosen to present the story, etc.). You have to pick the successful moves and the correct strategic direction given a very large number of variables. But you are also limited by the personality of the characters you’ve invented—they have to act within the ‘character’ you have given them, much like each chess piece is capable of only a certain type of move. It’s your imagination that allows you to thread the proper path. And in most cases, there are numerous “all right” paths, but one stands out above the others as the “best” path and finding the “best” one is critical.
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As a writer you will start having dreams about your story and your characters. That’s your mind working even when you consciously aren’t. You will also run into writer’s block, which I believe, when real, is your subconscious telling you to hold until you realize in your conscious mind something important with regard to the story. This is where the “write what you feel” school of creative writing comes in. I believe what they are focusing on is this very thing: the power of the subconscious (90% vs. 10%). It is more than feeling though; it is a large part of your brain and the better you can get in touch with it and use it, the better your writing will be.
Link to the rest at Write on the River and thanks to Joanna for the tip.
Here’s a link to Bob Mayer’s books