“For many years I suffered from a severe and continuous nervous breakdown tending to melancholia — and beyond. During about the third year of this trouble I went, in devout faith and some faint stir of hope, to a noted specialist in nervous diseases, the best known in the country. This wise man put me to bed and applied the rest cure, to which a still-good physique responded so promptly that he concluded there was nothing much the matter with me, and sent me home with solemn advice to "live as domestic a life as far as possible," to "have but two hours' intellectual life a day," and "never to touch pen, brush, or pencil again" as long as I lived. This was in 1887.
I went home and obeyed those directions for some three months, and came so near the borderline of utter mental ruin that I could see over.
Then, using the remnants of intelligence that remained, and helped by a wise friend, I cast the noted specialist's advice to the winds and went to work again — work, the normal life of every human being; work, in which is joy and growth and service, without which one is a pauper and a parasite — ultimately recovering some measure of power.
Being naturally moved to rejoicing by this narrow escape, I wrote The Yellow Wallpaper, with its embellishments and additions, to carry out the ideal (I never had hallucinations or objections to my mural decorations) and sent a copy to the physician who so nearly drove me mad. He never acknowledged it.”

"Why I Wrote The Yellow Wallpaper" in The Forerunner (October 1913) http://www.library.csi.cuny.edu/dept/history/lavender/whyyw.html