First i read Godfather by Mario Puzo, when i was 14. After that i went around dishing out "favours" and saying "when the time comes i will ask you for a favour" etc etc.
Then a year or so later i read Atlas Shrugged by Ayn Rand. After that, i didn't wash my dad's scooter without getting paid
he was nice enough to indulge me.
And then i read The Prophet by Khalil Gibran. That book is my guide. Whenever i feel lost or uneasy, i just pick that one up and start reading it.