Chila Woychik said this quote

Split your skull—a hatchet works well enough. Take a more delicate instrument—a scalpel, perhaps—and make a hand-sized slit; it doesn’t matter where. Reach in (no glove needed), plunge down to the very bottom, pinch the inside layer of membrane and yank, hard. If it feels like you’ve just turned your brain inside out, you have. Writing is brain surgery, pure and simple.