Even if you were born 1/100 of a second earlier, you would be a different person. Not only that, but everyone else in the world would be different as a direct result of you being born slightly earlier. To explain in an extremely simplified way:
Your dad would hold you at a very slightly different angle because of how he was sitting when the midwife handed you to him, which would affect everything else around him including you. For example, being held at that angle might mean that you didn't burp when you otherwise would, which in turn means everyone in the room didn't laugh at that moment in time, which in turn means they leave the room at a slightly different moment, which in turn means your aunty got stuck in a traffic jam on the way home, which in turn made her angry, which in turn made her kick the dog when she got home, which in turn meant the dog bit the cat, which in turn meant the cat ran into the road and got hit by a bus, which in turn made the bus driver slam on the brakes, which in turn made the cyclist behind the bus go flying into a garden where he landed on a beautiful woman and instantly they fell in love and had 7 children, one of whom murdered you 27 years later. That wouldn't have happened if you had been born 1/100th of a second later.