In 1953, writer Aidan Higgins sent Samuel Beckett one of his short stories, hoping for some feedback. Beckett sent a long, constructive, and very generous critique.
As part of his response, Beckett included this aside:
Work, work, writing for nothing and yourself, don’t make the silly mistake we all make of publishing too soon.
Publishing too soon might seem like a small price to pay for getting one’s work out there—what struggling writer would complain? But Beckett’s advice is solid, nonetheless: Best to first be satisfied with what you’ve written before you send it out into the world.