If so: Are you writing for person use, for therapeutic reasons? Are you writing creatively? Are you fabricating something to be left behind when you're gone? Are you documenting your progress on some personal endeavor?
If not: Have you before? Why did you stop?
I keep a journal with little aim or discipline. I'm hoping to take after the practice with more direction. I've read several times that coupling a thorough, mindful diary with regular meditation is a powerful tool. What about you?