When my friend's mother developed dementia, he was discouraged that each day she seemed to be losing so much. Then he remembered a saying from Taoism: In the way of learning, each day we gain more and more. In the way of the Tao, each day we have less and less.
So often we go through life, hoping that enlightenment is "right around the corner." Somehow, like a mirage on the horizon, the future recedes and remains out of our grasp.