"It was not intended to drive people crazy, but to save people from being driven crazy, and it worked" (Gilman).
What a great feeling that must have been for Gilman. Resisting the influences that were holding her down, and then to write something that changes the course of psychological history. That has got to be better than writing a really persuasive essay. Gilman knows she saved at least one mental life, but by now, that number is probably hugely bigger. Props to Charlotte Gilman for pulling off her goal in writing "The Yellow Wallpaper."