Inspiration is an ongoing, continuing process in the composition of a book. One doesn’t, for example, plot a joke. Like a lot of what happens in novels, inspiration is a sort of spontaneous combustion—the oily rags of the head and heart.
I would suggest that you go and support all bold things. There are really only a handful of plots or situations in the world, and we only expand upon them when we risk something. One’s art—not to mention one’s heart—shrivels if you have too rigid an expectation for everything you see or read or hear. You do not know everything; you have not seen everything. Surprise yourself. Let others surprise you. Get out more. See everything. Love it. Argue about it. Take the shards from what you saw and apply it to what you’re working on. Pass it on. Meet the deadline. Go to the pale judgment. There is no mystery to how these things begin or how they are implemented. The mystery is when it all works.