This book definitely worth reading. It consists of three parts: First one is more or less biography of Ray Dalio.
Overall i liked this book even though some of the messages are naive and will not work in some cases because of mathematical bounds. For example, Cardone tells you take your goals x10 and then work x10 more. While i some cases that approach might be possible, in cases where x10 goals means you need x10 investment (think of a marketing campaign goals & costs), you will quickly realize that your x10 goal will fuck up your budget planing, your risk-reward-ratio, ROI, etc.