Age Is Just a Number

I know that 21 is young, But inside, I feel so old. I've always had to be the adult. I've never felt my age. My friends, Have no problems cutting loose. They tell me to relax. I envy their ability to go with the flow. But too much is at steak for me. They pay for courses they don't like, Trial by error. While I'm, Planning for retirement. I know I'm only 21 But age is just a number.