Time

And then the one day you find
Ten years have got behind you
No one told you when to run
You missed the starting gun
.............................................................

I didn't have time for blipping today, so I felt this was apt.
PS.
If you haven't seen the film "In Time" I would recommend it. I have to confess I was skeptical when it was recommended to me, but it's actually quite thought provoking.
Imagine how differently we would look at purchases if we had to pay for them with hours and minutes of our life (which when you think about it, we sort of do)