Harvey Mackay is one of the most enjoyable business writers that I ever read. His books tend to read with the ease and interest of a novel, although they are quite simply just innovative business books. I read these years ago and still remember just how much I really enjoyed them and pulled really useful information from them. Along with his other book "Beware the naked man who offers you his shirt" I recommend reading them both.
I've always thought that you start dying if you stop learning. With that mantra in mind I've always tried to better myself, reading Zig Ziglar, Anthony Robbins, and anything else I can get my hands on. Mr. Mackay offers some fresh and interesting new insights and varying takes on the way to play nice in the business world!