This is what is meant by victory in defeat. Honor results from the spirit of the man in the fight, not the outcome. The first sentence of that book is perfect. It physically identifies a sympathetic hero, establishes the dimensions of the playing field and presents the terrible problem he faces. Hemingway wrote that book for you.
Writing is hell, editing is hell, rejections are hell and sometimes even success is hell.
Hemingway once described the ordeal represented by that first blank piece of paper in the typewriter. Here's what he said. It is facing the white bull which is paper with no words on it. If you do decide to face that white bull, then here is how you should do it. Whether you carefully outline all the elements of the story in advance, or whether you sit down with a basic idea in mind and just start typing, do the following.