My background was originally in sales in my 20's but shifted to analysis and underwriting after the last market crash. That being said, I evolved to keep my professional development open. This book is not only an easy read but worth its weight in gold in developing practicable and logical proven sales theories by one of the more solid entrepreneurs; Think Grant Cardone but the sportier version straight to the finish line. I would highly recommend the hard copy over anything digital for the fact that it is tangible, proof of ownership in your collection for all to see and most importantly wont get lost in an abyss of endless tabs online. Cheers! 69 and pay it forward.