I'll take the risk of sounding like an overly-idealistic idiot, but if I could choose between billions of dollars and staying an effing human being, I'd probably choose the latter.
Lots of people are really nice without any nicety filters.
Those that learn how to be good by books, that are not actually good, try to sugarcoat and wonder why being good doesn't work for them.
For it to be effective, it has to be genuine.
Check out: http://www.amazon.com/gp/aw/d/0374291357