Don't buy this book, it's a complete waste of your money. It doesn't give you any insights that the average person with common sense doesn't already know through life experiences. I would really give it no stars and and a big thumbs down. It's really bad when in the table of contents, the first word on the list is spelled "intoduction" instead of introduction. Then it's spelled the same way again, in big bold letters, when you go to the first page of the introduction. So bad 👎, and I'll say it again, don't buy this book.