The first thing you need to do to become a justice is go to law school. Actually, you have to do more than that. You need to excel at law school and, generally speaking, graduate into a good job in a prosecutor's office, a spot in a well-respected law firm or a position as a clerk for a federal or state judge. Some justices have actually started their careers as a clerk for one of their predecessors. If you clerk for a couple of years you'll likely want to take that job you passed up earlier, the one in the private sector - at one of those respectable law firms - or as a prosecutor or defense attorney. And if you take a job as a defense attorney, try not to take too many cases likely to come back to haunt you many years down the road. No one on O.J. Simpson's Dream Team, after all, is likely ever to get appointed to the Supreme Court.