You say a new era in art is preparing you sensed it coming continue your studies without weakening. God will do the rest.
Largely this is a class thing - writers tend to be cosseted little middle-class kiddies who think that the world owes them a royalty cheque. But just doing it - being in your room for years on end locked in your head alone with invented ghosts - it weakens and softens the body. And I know I can't just live in my head.
I think that a man should not live beyond the age when he begins to deteriorate when the flame that lighted the brightest moment of his life has weakened.
Old age is far more than white hair wrinkles the feeling that it is too late and the game finished that the stage belongs to the rising generations. The true evil is not the weakening of the body but the indifference of the soul.