Mark Jeffries has a way about him that make people like him. And in this book, "What's Up With Your Handshake?", he teaches how to do it for yourself. I have seen him "work his magic" several times in person, which is why I bought his book.
I had won a small scope of business by unwittingly, using one of his methods. When used purposefully, and combined with several of his ideas, I quickly won some major business accounts. The best part, is that after his coaching, the business was won seemingly without effort.
I would highly recommend his work.