That’s the great thing about writing in today’s high-tech world. You do have a publishing company! Anybody can publish (or get help publishing) their own books today. Just make up a publishing name if you don’t already have a business name you want to use for your book’s publisher. Amazon doesn’t care if you’re a big publisher or just one person writing lots of books at your local coffee shop. Technology has made the requirements of the traditional publishing companies almost obsolete.