In most situations, hubris is catastrophic. It leads you to overestimate your competence, which undermines your credibility. This inevitably leads to job problems and, potentially, to problems in your personal life as well. For writers, though, hubris may not be such a bad thing. In fact, it might be essential for aspiring novelists.
Slaving away in solitude for months or years, depending on your process, requires a special kind of arrogance. You need to believe, deep down, almost zealot-like, that you are writing something extraordinary…something people will want to read…something that people will want to spend money on. Devoting that kind of time and energy to a project, especially for indie authors and first-time novelists who lack a fan base to shore up their egos, in short, requires hubris.
You need overweening pride in yourself, in your work, in your imagination and there is nothing wrong with that. Without that hubris in play, most books would go unwritten or unshared. You can’t do without it and you shouldn’t try. The problem with necessary hubris, and you had to know a problem was coming, turns up after you finish the first draft.
That same hubris that let you sustain the work can also lead you to believe that it doesn’t need the attention of an editor, or that the novel doesn’t have structural issues, characterization issues or simple language issues. You are, of course, wrong about that. No matter how well-crafted your novel’s first draft is, it needs work. Always. Period. Do not pass Go; do not collect your Pulitzer.
The hardest part of being a writer is seizing your hubris by the tail and hauling it in once the writing is over and the revisions begin. You need to be able to put away the pride and look objectively at the work. If this sounds a bit schizophrenic, well, it is. You’re a writer. Get used to cognitive dissonance. It’s what you signed on for. Think of your hubris like a tool. Not every tool is right for every job. Hubris is a tool for sustaining the process. Objectivity is the tool for seeing it through to the end.