Letting go is not in anybody’s program for happiness, and yet all mature spirituality, in one sense or another, is about letting go and unlearning. You can take that as an absolute. As German mystic-philosopher Meister Eckhart said, the spiritual life has much more to do with subtraction than it does with addition.
— from the book Breathing Under Water: Spirituality and the Twelve Steps
by Richard Rohr, OFM