Hard Work and/or Luck
Warren Buffett, easily considered one of the world’s most successful individuals, understands the role of luck. He calls it the “Ovarian Lottery.” Whether you are born male or female, in America or Afghanistan, to rich or poor parents, “it’s the most important thing that's ever going to happen to you in your life. It's going to determine way more than what school you go to, how hard you work, all kinds of things.”