The journey is the destination
/One of life’s great paradoxes: Happiness requires purpose; purpose requires a sense of direction; a sense of direction requires goal-setting—but happiness cannot be had by realizing those goals. People believe that achieving big objectives will give them a lot of happiness and then are bitterly disappointed to find that doing so is a letdown. After a big achievement, many people experience depression. True satisfaction comes from progress in the struggle toward the goal.
Arthur C. Brooks writing in The Atlantic