Am I old yet?

No, this isn't a post for my "Overheard" series.  It's actually a comment I left on a blog post I read earlier today.   I've actually been thinking about this a good bit lately, since it's a milestone year of sorts....

My 20th high school reunion is happening right now, and as far away as I am from being a teenager (an age to which I don't wish to go back), I still don't feel like an adult.  I still feel very different inside from how I think that person in the mirror should feel.  And yet, 40 is coming soon.  I have a rising 3rd grader and 1st grader.  The college students that I used to work with now have jobs and spouses and graduate degrees and families of their own.  My husband and I have two paid-off vehicles, wills, and a comfortable home.  My family looks to me for homework help and dinner each evening.  I'm a reading partner and prayer partner at bedtime - my husband is the pro at tucking in the kids. 

Where did all of those years go?  And with so much that has happened in those in-between years - shouldn't I feel older?  But perhaps it is a blessing that I do still feel so young inside - I've got a lot left to do!