My identical twins have been competing since they were toddlers. When Thomas took his first steps, Charlie began walking the very next day, determined not to be left behind. That dynamic never went away. From stopping the use of pacifiers to football goals to final exam scores, each has spent his life measuring himself against the other. Sometimes, this has pushed them to greatness, while other times, it has brought frustration, injuries, and tears. As their dad, it’s been both thrilling and challenging to watch them push each other to their limits.