Even though I spent over an hour and a half working on my manuscript tonight, I didn't write any new scenes. In fact, I lost word count -- about 200 words. Why, then, am I so pleased with the result of my labor? I've been revising, and in revising turned the first draft of last night's scene into what it should actually be.
The first and second drafts of a scene often require nearly the same amount of work and thought as one another. The second draft is just as much writing as the first draft is, even though it rarely produces much word count; that's what I think.