The longer I write, the more important I believe it is to write the first draft as fast as possible. In drafting, I push myself so I am at the edge of discomfort...Later, it will be time for consideration and reconsideration, slow, careful revision and editing. But on the first draft I have to achieve velocity, just as you do if you want the bike to balance.
Shoptalk: learning to write with writers (ed. 1990)