And then you think, "Oh shit, people are going to read it, and like it and hate it. And then they are going to tell you. Or worse, they're not going to tell you." And then you have to wonder what you think of the work, when you've stepped far enough away from it to be able to evaluate it with less bias.
And then the feedback does start to come in. And people tell you that they liked x but y, not so much, that one they didn't really engage with. And you think that's cool. Maybe this was a better choice than that and you think about what was behind both choices. And then someone else comes along and says they loved y but x they couldn't really relate to. And you start to freak out and think "what does this mean?"
I think it means it's cool - that different stories work for different people and as long as someone takes something away from the book, we did a good job. The great thing is that people seem to be relating to wildly different works in the book. I kinda really like that.
Also? It means they're reading it, which is the best bit of all!