Time Passing

It started to weird me out that I'm 20 already, turning 21 at the end of the year. It's weird thinking people in their early twenties are my age now, not 5 years older. It's weird not being 15 or 17 anymore, back then in 10 years I'd be 25, now I'll be 30. I'm five years older than a 15 year old now, it's weird. I feel like the whole "having your life ahead of you" thing doesn't apply anymore, like any problems I had before were okay because I was only a teen, now I'm 20, 21, 22, 23, etc and I feel like I have to handle everything.