Kristen Joy, The Book Ninja, is a highly sought-after publishing authority, multi best-selling author and writer for her award-winning blog who has started over 50 publishing companies, published over 200 books and e-books and trained thousands of authors throughout her publishing career.

In Fall 2013 she challenged herself to write and publish a new Kindle book every week for 18 weeks straight, then went on to create her exclusive Kindle in 30 Challenge.