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A book is only as good as its authors.

Selling: The Profession was written by two sales veterans who know how to write content that is both engaging and practical.

Dr. David J. Lill
Author and Founder of DM Bass Publications
Jennifer Lill Brown
Author and Ghostwriter for Influencers

David Lill has 40 years of sales, sales training, and teaching experience. He earned his Ph.D. degree in Marketing from the University of Alabama, and he taught sales and marketing classes at Baylor University, Belmont University, and New Mexico State University.


Dr. Lill is the founder and president of DM Bass Publications through which he wrote, publishes, and markets Selling: The Profession

Dr. Lill is also a business and sales consultant who conducted sales seminars and training courses for decades. His Relationship Selling Model is used by companies throughout the country in industries including insurance, telecommunications, real estate, publishing, banking, hospitality, and automotive.

He is also the co-author of Cause Selling: The Sanford Way (2nd edition), The Handbook for Relationship Selling, and The Official Handbook for Health Club Sales. In addition, Dr. Lill has published numerous articles in various academic, trade, and professional publications. These include: Selling Power, Journal of Advertising, Journal of the Academy of Marketing Science, Sales & Marketing Management, Business Topics, Nashville Business Journal, and the Journal of Pharmaceutical Marketing & Management.

Dr. Lill sold for two large telecommunications companies and worked for the Milwaukee Journal in their Advertising Laboratory Division. While there, he brought in prestigious clients such as General Mills, General Foods, and Nabisco and conducted marketing studies using Milwaukee as a test market.

David lives in Nashville, Tennessee with his wife, Martha. They are blessed to have two exceptional children, David, Jr. and Jennifer, and five grandchildren. David is an engineer with TVA in Chattanooga, Tennessee where he lives with his wife Amber, and their daughter, Madelyn, and son, David Matthew. Jennifer is a published author, ghostwriter, and entrepreneur.

Jennifer Lill-Brown comes from a background of sales, entrepreneurship, and authorship. She is a renowned and prolific ghostwriter who has helped more than 40 prominent professionals and public figures put their passions into words (


Some of her more notable clients include NFL Hall of Fame quarterback Joe Theismann, Dr. Josh Axe, Jordan Rubin, James Malinchak, Dr. David Jockers, John Crowley, J Michael Drake, Scott Keffer, Jay Adkins, and Dr. Asa Andrew. She has a unique talent for researching and writing from the perspective of virtually anyone from any background.

Jennifer has also co-authored four books of her own. She and her father’s most recent endeavor is Cause Selling: The Sanford Way (2nd edition), which is based on the vision of billionaire philanthropist T. Denny Sanford. She was also the co-founder, along with former business partner Tom Black, of the Tom Black Center for Selling Inc. While working with Tom, she edited and produced his acclaimed sales book, The Boxcar Millionaire.

While obtaining her degree in finance from the University of Alabama, Jennifer sold for one of the most respected sales organizations in the country, The Southwestern Company. She sold educational products door-to-door by relocating and fully running the business from concept to sales, delivery, and customer service. She was the awarded “Top First Year Dealer Award” and facilitated the recruitment and sales training of new recruits, as well as formulating and developing a system of lead finding and a unique delivery method.

Today Jennifer lives in Nashville, Tennessee with her husband Will, and their three homeschooled handsome sons, Porter, Wyatt, and Jesse. Her parents, Martha (Grandma) and David (Papa aka Dr. Lill), live next door and are proud, devoted grandparents.

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