Come on, Kyosaki & Trumpie seem to do ok out of it. You just need to "borrow" a tried and tested theme from another guru's book, put your own spin on it (like instead of "rich dad" you could have a "rich friend"...oh wait that has been done, but I think "rich mentor" is available, the book would obviously be called "Rich Daz Poor Daz"), take you 20 minutes max, then spend another few minutes every year thinking up a catchy title and release another book - you could have exactly the same content in every book, but release 20 books and they will still sell.
Then after a few years you could put exactly the same content on the net, throw in a couple of "hot tips" and call it your "mentorship program", charge two grand a pop. No one will know what you look like (well unless they happen to read back-issues of API in the can), so you could pay some homeless guy a few hot meals, make him memorise your book, and send him around the country doing seminars, where he spends he majority of the day advertising your multitude of books and your special online limited mentorship program. Grab a monopoly board and change the property names to things like "cheap piece of dirt" or "expensive piece of dirt", get it mass produced in China for 4c a pop, sell it at your seminars and online for $400 for Dazzflow, a couple of years later release a $200 "expansion pack that teaches you even more advanced concepts" (i.e. a few Chance cards that say "Watch a game of footy, you may as well throw your life away now" or "Buy a Playstation, step in front of a train and end it"). By now you will have a multitude of converts, hobos going around the country selling your "products" and charging people for the priviledge of hearing your sales pitch, and earning a healthy little side income.
Sounds like the perfect Gravy Boat!