I read this book as a teenager and I must say it helped me restructure my entire thinking process to that of a positive one. I gift this book to someone whenever I can because I feel the author gives the reader a great way of looking at their life.
I would say it is a book with lot of psychology in it along with some spiritual undertones. It is not specific to a single religion and any one could read this book and benefit out of it.
I think the reason why I am simply in love with this book is because it told me and made me believe at a raw age that there are endless possibilities on how you could change your life and the reigns are completely in your hands.
It helped me listen to my heart and say things honestly to myself which in turn helped me to keep all negativity at bay. So all you need is an open mind and you will be able to see the good changes that this book can bring into your lives.