From "Just this Side of Byzantium" by Ray Bradbury:
It was with great relief, then, that in my early twenties I floundered into a word-association process in which I simply got out of bed each morning, walked to my desk, and put down any word or series of words that happened along in my head.
I don't understand why Bradbury uses "flounder" which seems to have a negative connotation, but I think, based on the context, "a word-association process" is a gift for the writer, by which Bradbury writes his stories.