A writer should always know when to bring things to a close and never strive to keep alive for form's sake alone.
I have never done crosswords or Sudoko; I used to play a bit of chess but with no real talent. But I have been writing Compositions all my life. Now they may discharge my duty to remain Mentally Active. It is no accident that I chose to run through the Alphabet in the month which brought me my 65th birthday.
I had no advance plan; I made things up as I went along, and I hope it shows. For some letters, I had ideas in advance but always plumped on the day for something which felt as if it would write itself.
I had nothing in mind for letter X and for letter Z, I could only think of Zzzz. I did have a choice for Y.
I have often thought there is a nice essay to be written on the last lines of novels, even the last word - perhaps it's been done.
I never finished Joyce's Ulysses and probably never will, but I read Molly Bloom's soliloquy which concludes the novel and which, famously, ends with the word Yes:
and yes I said yes I will Yes.
yes yes Yes. It is life affirming and on its own ought to dispose of the idea that Joyce is merely a formalist - worse a cosmopolitan one in the purse-lipped rhetoric of F.R. Leavis.
yes yes Yes until we conclude that it is time to bring things to a close. No more.