It does not. The entire book is about how he cleverly figured out how to take his struggling small business and automate, streamline, or outsource all its parts until he only had to actually attend to it ... roughly four hours a week. The rest of the book that isn't about this is about how to use your new-found free time to live an enviable life, using himself as an example.
I say again that I am a fan of his and that The Four Hour Workweek had a lasting positive effect on how I think about work and how I think about the value of my free time. I am not saying that the content of his books is bunk because he is an aggressive self-promoter. I am rather saying that the content of his books is in a sense inextricable from the fact that he is an aggressive self-promoter, perhaps because a hidden theme across all his work is that being an aggressive self-promoter is useful.
ETA: He also uses other people as examples, in all his books, but he always includes himself and his personal anecdotes. I wanted to clarify that the books aren't actually 100% about him, they're not even 10% about him, but his signature and his exploits run throughout them.
I'm a bit sceptical about T4HW, since the numbers in this blog post (http://thehackensack.blogspot.de/2009/10/how-much-was-tim-ferriss-really-making.html) imply he exaggerated very, very much (although 4.000 $/month still alllows a comfortable living).
Do not read this if you don't know anything about this Tim Ferriss person
I suspect anyone here is less different from Tim Ferriss than they'd like to be able to justifiably claim (see here, here, here, here).
I don't mean Tim the Result. Results are clouded by what has been brought to attention in one of the 2009/2010 rationality quotes here
I mean Tim the method.
The varieties of achievements he's done are behaviourally distinct from living normal life. They are not so complicated to learn though.
I invite you to ask the following question: What is one thing he's done I haven't that probably I could do, and what is the explanation I invented to myself for not having done it? Do I truly believe this explanation? Think for a minute before reading more
When I ask this to friends who read some of his stuff, I see three kinds of answers:
This is impossible for anyone who doesn't have property X (where X is always a fixed characteristic, like place of birth, blondness, impeccable genetic motivation)
We have very different values, and there is no point in trying that about which I don't care - interestingly, with every new book, there are more interests on the table to be considered "not my values", but no one suddenly came to me and said: Wow, finally he cares about throwing knives! I have reason to try after all. Are my friends values narrowing in proportion to Tim's expansions?
There are a lot of people who don't want to have more money, learn languages, work less, or travel a lot, but there are much fewer people who besides all of those don't want to exercise effectively, learn quickly, improve their sex lives, throw knives, memorize card decks, program, dance tango, become an angel investor, be famous, write books, cook well, get thinner, read quicker, contact interesting people, outsource boring stuff and so on...
The third kind is personal attack. People claim he has property E, which makes him Evil, and his evil either is proof of the falsity of his accomplishments, or is proof that emulating Tim means you are a dark creature who shall not pass through the gates of heaven. The most interesting E's are "He's a brilliant marketing man, selling profitable lies, but marketing is Evil." "He doesn't understand survivor bias, and how lucky he was, and has not read outliers to know it takes min4000 hours to get good at stuff" "He's a good looking ivy league blonde, this makes him evil" (this girl probably had in mind Nietzsche's lamb morality, from Genealogy of Morals).
What is one thing he's done you haven't that probably you could do, and what is the explanation you invented to yourself for not having done it? Do you truly believe this explanation? Would your best rationalist friend truly believe that explanation?