stop when it suits you

The only writing advice you'll ever need

Courtesy Michael Lopp (aka Rands in Repose): "How to Write a Blog Post"

Randomly think of a thing. Let it bump around your head a bit. If the bumping gets too loud, start writing the words with the nearest writing device. See how far you get. The more words usually mean a higher degree of personal interest. Stop when it suits you.

There's more, of course, but not too much: at fewer than 200 words this has to be the most succinct and effective bit of writing advice ever published.