We, and I think I'm speaking for many writers, don't know what it is that sometimes comes to make our books alive. All we can do is write dutifully and day after day, every day, giving our work the very best of what we are capable. I don't that we can consciously put the magic in; it doesn't work that way. When the magic comes, it's a gift.
I didn't expect to recover from my second operation but since I did, I consider that I'm living on borrowed time. Every day that dawns is a gift to me and I take it in that way. I accept it gratefully without looking beyond it. I completely forget my physical suffering and all the unpleasantness of my present condition and I think only of the joy of seeing the sun rise once more and of being able to work a little bit, even under difficult conditions.