Answer:
Held firmly in the hands, like a sword it cuts deep. Bloodless strokes, all, then forward we leap.
Not a burden for its weight and daily carried out, He who takes it wishes it had never come about
You can only have it once you have given it.
Some try to hide, some try to cheat. But time will show, we always will meet. Try as you might, to guess my name. I promise you'll know, when you I do claim.
What flies without wings? What passes all things? What mends all sorrow? What brings the morrow?
I start with T end with T and within me is T.