@Coen Wonder, I have to literally force myself not to reopen previous chapters so I don't edit or proof-read. lol One year I had my sister lock the documents so I couldn't go back in. The struggle is real.
@Stefani Michelle, I try to proof-read while I write, or I get crazy bogged-down (as could be expected) if I ever try to go back and revise the mess that is a NaNo project!