The mystery of life is that you keep getting older and things keep changing around you.
You wish you were, but you can no longer.
You thought you should, but you no longer would even if you could.
You wish you had, but now it is just too bad.
But even the things you did then that you thought would bring you happiness now are no longer the same. They are not be appreciated now as much as you thought then.
Nonetheless you can still find joy in whatever life is left for hope, sunrise and surprise never give up even when your energies wane.
So what is left of all the haste to get on in life but to say that, whatever your fate, at any rate, find peace in that you have done your best and so can rest and by grace you will pass Gods test.