Stubborn doesn't begin to describe these pint-sized bulls of the zodiac. These kids are set in their ways, and any efforts you make to take those diapers away is going to be met with defiance. They're rigid when it comes to change, so your best bet here is to avoid any of those "potty-train-in-a-day" crazes and instead adopt an ever-so-gradual transition to their daily routine so as not to make them feel insecure.