I found this book to be a mixed bag.
At first the book reads as if it adheres to the Prosperity Gospel, but if you persevere you realise this isn't the case. There is also much of this book that is just biography, and anecdotes of his own inspirations and prejudices. The chapters are very, very short, I hadn't realised that it was purposely aimed at young readers, so that may be the reason why?
And some of the comparisons are hilarious - when discussing the idiom [paraphrased] "the wealthiest people are not always the richest and the richest people are not always the wealthiest" he gives the example of someone who has a one hundred million pounds of savings but is depressed and gets divorced, compared to someone who has one hundred thousand pounds of savings, who is happy and content. £100,000!!!! That's still someone who is really really rich! I do agree that you can be economically poor, yet rich in life, but this was not the example to choose!
However, within the book are nuggets and gems, hidden amongst the other stuff. I got the book because it was free on Kindle, and if you can get it for free it is definitely worth reading.