I read a quote by C.S. Lewis a while ago that perfectly summed up how the writing process works for me. Unfortunately, I can't remember it. So I tried to look it up, and found a few more quotes on writing that I thought I'd share.
If there's a book you really want to read, but it hasn't been written yet, then you must write it. ~Toni Morrison
The difference between the right word and the almost right word is the difference between lightning and a lightning bug. ~Mark Twain
What no wife of a writer can ever understand is that a writer is working when he's staring out of the window. ~Burton Rascoe
Ah-ha! I've found the quote I'm looking for:
"With me the process is much more like bird watching than like either talking or building. I see pictures. Some of the pictures have a common flavor, almost a common smell, which groups them together. Keep quiet and watch and they will begin joining themselves up. If you were very lucky (I have never been so lucky as all that) a whole group might join themselves so consistently that there you had a complete story; without doing anything yourself. But more often (in my experience always) there are gaps. Then at last you have to do some deliberate inventing."
That's more what the writing process is for me.