becoming adult

when i was little, i was thinking that university students were already old enough to be said an adult.
but now i am a university student!
i don't feel i am an adult!
i became 19 last week.
i cannot believe i will be 20 next year.
when people become 20 years old, people treat them as adults.

so, i will be an adult next year according to my thought and laws in Japan.
the biggest change is tha i will have more responsibility in myself.
but i think it is something strange to be an adult from the day of my 20 birthday.
maybe i am changing an adult now, because i don't think i can change an adult in a day!