Growing Old

I look into the mirror and see the evidence
That probably I wish I didn’t have to but force myself to see

The strands of white mixing with the browns in my hair
Making me ever so often want to stop and stare

Is this is what growing old is all about, I mull?
Is it the physical changes or it is more mental?

Because while my body ages
My mind is still agile, still flexes and fizzles

So what is the definition of old?
The worldly definition keeps changing all the time

Is it what’s inside of you or what the world sees?
I don’t know the answers, do you?