It is never too late to be what you want. But you must first know what that is. It is never too late to do what you need. But you must first understand your necessities.
It is never too late to do what you've always said. But your goals must be clearly stated. It is never too late to change the narrative. But you must have a narrative to replace it.
To express that a love has become extinct, is to acknowledge or to express that it was once alive; a living thing. The moment of extinction can be considered the death of that essence or expression within a relationship; assuming any capacity to renew and recover has been lost at this point.