Ray Bradbury said this quote
“ I've written about 2,000 short stories; I've only published 300 and I feel I'm still learning. Any man who keeps working is not a failure. He may not be a great writer, but if he applies the old fashioned virtues of hard, constant labor, he'll eventually make some kind of career for himself as a writer.Ray Bradbury, 1967 interview(Doing the Math - that means for every story he sold, he wrote six un-publishable ones. Keep typing!) ”