Nice one (*)(*).  A song about Regret for not acting upon a situation when the opportunity was STILL there.

The Living Years - Mike and the Mechanics

Every generation
Blames the one before
And all of their frustrations
Come beating on your door

I know that Im a prisoner
To all my father held so dear
I know that Im a hostage
To all his hopes and fears
I just wish I could have told him in the living years