You don’t have to wait for NaNoWriMo to challenge yourself to write more and write better. Invent your own crazy, questionable, satisfying, fun, possibly sadistic writing feat and make it a regular tradition. My favourite is the 10k in 4h marathon which I discovered on the NaNo Overachiever boards many years ago. I’ve only won once, disintegrating into finger-cramped, misspelt gibberish in the last fifteen minutes. Nevertheless, it’s never failed me! Give it a go, and tweet me how you fare.
My modest suggestions:
✎ 3 morning pages every day before breakfast
✎ 10,000 words in 4 hours
✎ A page of cursive after every glass of wine
✎ A day spent rewriting one paragraph in ten different styles
✎ A novel in a month