First drafts, notes, brick walls

I wrote around 2000 words on the new book yesterday, but twenty-four hours later think that some of that writing will have to be scrapped. 
That’s how it goes on the first draft.
I work best, it seems, writing something down – anything – rather than trying to think ahead without having already done that investigative writing, the writing that 'finds' the story, in a sense. The Disenchanted Wizard was done this way. It was written and rewritten; whole chunks and chapters were scra...