Writing a book and getting it published used to be a huge endeavor. You had to pitch it to a literary agent who would then pitch it to a publisher and it could sometimes take years to get it accepted. These days, with kindle and the online world at everyone's fingertips, getting your book out to the world is quicker and easier than you might think.
If you're an entrepreneur, having a book for your business has many perks such as the added credibility, expert status and the ability to use that book to attract your ideal clients. Some even say that a book is now like a bigger, better business card.
Used correctly, your book can help you attract your tribe for years to come (so long as you continue to market it, but that's not what we're talking about today).