From Stephen King’s 2000 memoir On Writing:

If “read a lot, write a lot” is the Great Commandment—and I assure you that it is—how much writing constitutes a lot? That varies, of course, from writer to writer. One of my favorite stories on the subject—probably more myth than truth—concerns James Joyce.

According to the story, a friend came to visit him one day and found the great man sprawled across his writing desk in a posture of utter despair.

“James, what’s wrong?” the friend asked. “Is it the work?”

Joyce indicated assent without even raising his head to look at the friend. Of course it was the work; isn’t it always?

“How many words did you get today?” the friend pursued

Joyce (still in despair, still sprawled face down on his desk): “Seven.”

“Seven? But James … that’s good, at least for you!”

“Yes,” Joyce said, finally looking up. “I suppose it is … but I don’t know what order they go in!”