How difficult is it to be published?

Most big publishing houses look for a steady development of a writer: That is, they look for previously published short stories (if you are trying to publish a novel) or articles if you are writing a nonfiction book. Being published in reputable journals or magazines means you are developing an audience, something most publishers think is important. It also gives you credibility. As another poster mentioned, it is also a good idea to work with a literary agent, once you have a body of work and a novel. They will help guide you to the right publishing house for your work and also they "pitch" your novel's idea to editors who buy rights at the publishing house. It's a lot quicker and more productive than going in a big slush pile, if you send your novel in on your own. Good luck with your writing. With each new accomplishment (published short story, for example), you will gain attention and move yourself closer to your goal of publishing a novel!