Have you considered Crowdfunding your book? If enough people have read it and believe in your message, you could use their testimonials to crowdfund it (lots of new websites who can help you here). I use my book to build credibility and to get me in the door of larger companies, then I "throw" in the book as a freebie when I'm negotiating my fee to come in and speak or train. Hard to explain my other thoughts through email (plus I need to know more about your subject, the book you've written, how much you're spending to publish it, etc.) so feel free to call me chat (for free, of course, at least for the first 30 minutes). 510-537-0107.