Benjamin Franklin writing technique
http://www.gutenberg.org/files/148/148-h/148-h.htm start at "Three or four letters of a side had passed, when my father happened to find my papers and read them."
for a summary, see e.g. https://excellence-in-literature.com/copywork-how-benjamin-franklin-taught-himself-to-write-well/ (there are at least several articles online discussing this)
- Duncan Sabien discusses this technique in terms of inventing rationality techniques in this EA Global talk