Just find a job in the top third of moneymaking fields, and stay consistent. You can be a dog catcher and still make $250k a year, as long as you hire a staff and explot the comparative advantages of their time and labor.
oh, and driving across state lines, adopting a dozen pitbulls each week, sharing some rabies with them, and setting them loose in affluent communities the same day you hand out your busienss card, may be considered a shrewd way to ensure demand.