The human condition: lost in thought.
Only the truth of who you are, if realized, will set you free.
The past has no power over the present moment.
One way to become aware many times during the day is to take a conscious breath. Doing so breaks the stream of thinking.
Sustained enthusiasm brings into existence a wave of creative energy, and all you have to do is 'ride the wave'.
Why is old considered useless? Because in old age, the emphasis shifts from doing to Being, and our civilization, which is lost in doing, knows nothing of Being. It asks: Being? What do you do with it?