Made by Hamilton, for Hamilton's fans. Best consumed with other Hamilton's products, that are advertised in the end of the book. Doesn't seem helpful for anyone not familiar with the author.
I liked some ideas, but most of them are just... Interesting? The author is trying to bring up different systems of understanding yourself, but builds them on no real foundations - just some tradicional chinese inspired ezoteric ideas about five elements and one basic psychology idea that some people are "introverted" and some "extroverted".
If you love Hamilton - give this a read and you will not be disapointed. If you don't even know who the hell he is - don't read this.