In constructing our narratives, we identify which particular events or experiences were formative or transformative. In telling our stories, we also claim some authority over our own experiences and their meanings.
Oh, I've discarded a great many [poems]. And occasionally I've discarded and then resurrected. I would find a crumpled yellow ball of paper in the wastebasket, in the morning, and open it to see what the hell I'd been up to; and occasionally it was something that needed only a very slight change to be brought off, which I'd missed the day before.