Identify a trait you think is true for yourself. Consider the present moment as a temporary end point in its thread. To follow the thread back, divide your life into sections of time:

Infancy (birth-twelve months)
Toddlerhood (twelve months-two years)
Early childhood (two-five years)
Middle childhood (five to twelve years)
Early teen (thirteen to sixteen years)
Late teen (seventeen to nineteen)
Young adulthood