One of the most common questions I get from potential authors who are about to write a book is something along the lines of:. At Scribe, our largest client-base is consultants. A book is what establishes a consultant as authoritative and raises their visibility about the competition. Ashley Welch and Justin Jones were in this predicament. They had taken their sales consulting firm, Somersault Innovations, to a high level, but they were not standing out until they wrote their book. Kirk Drake owned a successful consulting firm that helped credit unions learn to market and sell better. For a consultant, a book is the best marketing you can. People have started speaking careers without books of course, but almost all professional speakers eventually write a book; and when they do, the fee they can command usually triples. John Ruhlin is a terrific example. This is because a book is a credential for a speaker.