Orson Scott Card said this quote

I wonder sometimes if I'm not, after all, a piece in some other player's game, following blindly his grand designs without ever knowing that my path along the board is only a feint, while the important matters are played out elsewhere by other men. But whether there's some grand design really matters little to me. My only hope was this: To see what might be, to believe that it should be, and then to do all I could to bring it to pass, whatever the cost. When a life spins out as joyfully as mine has done, then the price, one paid so painfully, is now recalled in gladness. I have received full value. Here among the shepherds, my cup is filled with the water of life; it overflows.