When the mind is full of any one subject, that subject seems to recur with extraordinary frequency - it appears to pursue or to meet us at every turn: in every conversation that we hear in every book we open, in every newspaper we take up, the reigning idea recurs; and then we are surprised, and exclaim at these wonderful coincidences.
A man who is not born with the novel-writing gift has a troublesome time of it when he tries to build a novel. I know this from experience. He has no clear idea of his story; in fact he has no story. He merely has some people in his mind, and an incident or two, also a locality, and he trusts he can plunge those people into those incidents with interesting results.