Don't go looking for fame with your book. You'll get nowhere meaningful.If you start out trying to make money from your book, if that is the only goal in mind, your writing will suffer for it. Instead of writing a convincing story with memorable characters, story line, and a plot that makes the reader think, you'll end up with words alone.
Don't seek the glory of man for yourself. Seek the glory of your Creator, who gave you the mind to seek, the heart to find, and the hands to write. Then get off your rear, fight your fear, and publish the words He gave you. :)