The unstoppable

I am on my way to god knows where
I have never stopped here and there
Try to hold me or wail and cry
But out of your hand I shall fly
I give your joys and shed your tears
I bring your happiness and your fears
Once I am gone, I never return
I am important, that you must learn
I am cruel, I snatch moments away
But what can I do, I am on my way
Learn from the memories that I have in store
Live the fullest today and better future you ensure
Keep pace with me, I carry along the able
I am TIME, the unstoppable