The moment you turned 19

I thought i was already matured but when i turned 19 this is when i realized i was different when i was 18. I don't always think about my life direction but when the moment i turned 19 this is where i started to think about it, i feel like i am old enough and is left behind even though I’m still young. Being 19 yet doesn't have a full experience in life feels like a senior who is being left behind because they can’t do anything anymore. I feel some sort of sadness because i can't accept the fact that i am more close to 20s than being a teen.