02/05/2012 by The Doctor Of Common Sense How to Use Common Sense for a Happy Life (eBooks) Promoting Common Sense How to Use Common Sense for a Happy Life (eBooks) Buy It Now This short book will help you in your journey to the Happy Life. Follow the 3 rules in this book in order to be happy and content. A man always has two reasons for doing anything: a good reason and the real reason. J. P. Morgan