When my 1½-year-old daughter spotted an open can of soda, her eyes lit up and she took off toward it like lightning. I quickly scooped it up, tucked it in the fridge, and said, “No, no pop.” For the next 30 minutes, she was on a mission—completely focused on getting that drink. No distraction I tried could shake her determination. That unstoppable persistence showed up early… and nearly 30 years later, it’s still going strong. By age six, we were deep in power struggles. Than