By Paul Polak How much money is enough, and what will I do with myself when I get there? This question is just as challenging for multimillionaires as it is for dollar-a-day farmers. The dilemma is tantalizingly similar for both. For the one-acre farmer whose family now has enough to eat for the whole year because they have increased their income to three dollars a day, the question is what’s next? Do they keep increasing their income from farming, or focus on educating their kids, stabilizing their income, and living a happy rural life? For the multimillionaire, the question is what’s next? Do they keep…