On finishing: why the last paragraph is always the first one you wrote.
Every essay I have ever finished began with its last paragraph. Not intentionally — I write forward, like everyone else, but by the time I reach the end I understand what I was trying to say, and the opening I wrote at the start is almost always saying something else entirely. So I move the ending to the beginning, and then I have to write a new ending, and that new ending is better because now I know where I started.