A lot happens in 3 years.
You can move from girlhood to adolescense - or from infant to girl.
Your body can go from helpless to self-propulsion.
Your mind can go from inquisitive to One Direction.
Your life can be thrown up in the air and land askance.
You can find focus and direction.
You can fail to discern when things need to change until it is forced.
But mostly, you can learn to love over and over and over again.