Books play a very important role in all of our lives. Books play a leading role in solving various problems in our life. It helps us to take decisions in real life as you mentioned in your post that by reading the book ❝Think and grow rich❞ written by Napoleon Hill you can manage funds, income, expenses, Got a good idea about invest. We all have problems with our life story and sometimes we find a deep similarity in one book by many authors. Then that book helps us to solve our problem.