When You're Old

There is not much to say,
Sometimes one's mind is blank,
As if nothing existed in the world,
Like it was a clean slate,

But then your eyes open to what there is,
Which is e'er quite a bit,
You mayn't be able to relive the past,
But you can also never escape it,

Nor the present, that just carries on, too,
As if you were nothing,
And if you don't try to keep up with it,
You will find you soon become just that thing,

So, keep it up,
That is what I've been told,
No matter what others say about your goals,
You want to know you chased them when you're old.