I just read an article on thestreet.com that outlined John Templeton's 5 steps for financial success (billionaire mutual fund magnate, eccentric - wikipedia entry). We can't all expatriate to the Bahamas to avoid taxes like he did (although from what I hear Thailand is still an option), but in these general rules taken from his life there was some sound advice.
Take calculated risks.
Save now, spend later.
Be a patient value investor.
Take a free market fundamentals view of value.
Minimize your taxes.
I don't know much about this guy, but I like the simple elegance of these five rules. I'm not adding much original analysis here, so if you want to read them in more depth check out the thestreet.com article, or this other one (written by the same author)