Robert Kiyosaki highlights the important lessons he learned from his rich father in order to avoid his poor father’s financial fate in Rich Dad Poor Dad. The book has gone on to become one of the all-time best-selling personal finance books. In this book, a wealthy father teaches two young boys vital lessons about money through his personal experiences. The most important lesson in this book is to comprehend how to effectively utilize your time and mind to build your own wealth through business and investments.