Making it in business isn’t easy. Hard work, perseverance, passion and that key idea are no guarantee of success. Good fortune can play a part, too, of course. But as several industry leaders have shown, it’s possible to make a great deal of money even when the odds are arguably stacked against you from the start. These ten highly accomplished businesspeople didn’t have the easiest of times in early life, having been given up by their parents at birth or in childhood. However, their subsequent successes ought to serve as proof that anyone can rise to the top, regardless of their beginnings.