Since the purpose of all dharma, both mahayana and hinayana, is simply to tame ego-clinging, as you practice dharma or work at mind training, ego-clinging should decrease. If your efforts in dharma do not counteract egoclinging, your practice is meaningless. Since this is the one criterion that determines whether dharma practice is effective or not, it is said to be the yardstick by which a dharma person is measured.

From THE GREAT PATH OF AWAKENING, by Jamgn Kongtrul, translated by Ken McLeod. 1993 by Ken McLeod.
Published by arrangement with Shambhala Publications, Inc., Boston.