I wasn't going to add this to my Goodreads but this is the actual worst book I've ever read.

The bulk of it is basic things, like making eye contact, making up for mistakes, being polite, and being confident.

The rest is anecdotes that are totally sycophantic. The introduction is all about how the successful and wealthy people you know of aren't beneficiaries of inheritance but their natural ability to influence people. This is negated by the very first tip, which is supported by a story about a person who inherits a business!

There are also stories about how nobles are better than commoners, and advice that one should agree during a speech of a more successful person (muttering "good idea!") because it makes you seem like an independent thinker, an assertion that is absurd on its face.