Writing careers are short. For every 100 writers, 99 never get published. Of those who do, only one in every hundred gets a career out of it, so I count myself as immensely privileged.
There is no reason why the Louvre should be your favourite gallery just because it has the grandest collections in France, any more than Kew should necessarily be a favourite garden because it has the largest assemblage of plants, or Tesco your chosen shop because it has the widest variety of canned beans.
I was sick and tired of reading other people's epigraphs. They all seemed to be in ancient Greek, middle French or, when they were translated, they never seemed to relate to the book at hand. Basically, they seemed to be there just to baffle you and to impress you with how smart the writer is.
When you start a novel, it is always like pushing a boulder uphill. Then, after a while, to mangle the metaphor, the boulder fills with helium and becomes a balloon that carries you the rest of the way to the top. You just have to hold your nerve and trust to narrative.