(((Person66)))
Take a slow deep breath. You're okay. What you're experiencing isn't weird or unusual.
I waited a little while to go back to college myself. My childhood dreams and expectations didn't take barriers that life throws at you into account. I was was supposed to be married at 23, have my first kid at 26, my second kid around 28/29 and have a career somewhere in there.

LOL!
Somewhere along the line, we all reach it at different times, we realize that life lasts a LONG time. It doesn't matter if we're 25 or 45 when we get our degrees and go onto graduate schools. Life still has a pretty long ways to go. We can even change our goals and expectations of ourselves along these lines. (I've had to do that too.) That is life. We deal with what life throws at us, get up and keep going.
I'm 41 years old now. While I wasn't able to achieve my youthful goals, I have learned that I do still have some purpose in this life. Add some happiness to the elderly people's lives and appreciate the beauty of simple life. Simple life = flowers, birds, litter-free highways, that kind of thing.
I have no idea of what age I now consider to be old. It just might be a crumbly, grouchy attitude that some people become at X age. I've helped elderly at all ages, they can be just like little kids themselves!