Someone told me that writing a book is similar to entering a long-term relationship with an obsessive partner. I learnt this firsthand. It took me close to 4 years to write this book. I started writing this book in 2005 and had to fight distractions like affairs, jobs and marriage (not in that order) to complete it in the latter half of 2009. Even a medium sized book like this, brings to light the help of many who have encouraged me to proceed, persevere and finish the project. I would like to acknowledge the help given by my wife, family and friends who were supportive from the beginning.