It's kind of like a feedback loop, then? As your life changes, the cards in your deck change, and as you change the cards in your deck, it changes the path your life takes?
For instance, you buy a few Magical Filing Cabinet because you want to get ahead in your law firm. Suddenly, you find yourself being a bit more organized. Then you duel someone and you draw a card you've never seen before: Everything In Its Place. When you go home, you start to schedule your family's activities down to the minute.
Flash forward a few months, and you're leading a street gang called The Organizers, full of formerly aimless punks who you forcibly converted to The Way Of CONTROL with your cards, which was easy since their decks were just mishmashes of cards they saw on TV.