Practicing asceticism can help one attain certain spiritual achievements, such as the abilities to see the past, present, and future, to cure people of their diseases, and to wield magical power, but it can never lead to eternal liberation. Shakyamuni Buddha attained great compassion through his practice. He even sacrificed his physical body and forsook his kingdom, courtly life, wives, and children, and yet failed to attain Bodhi (enlightenment) and liberation until he practiced the Quan Yin Method. Thus, practicing any other method is useless no matter how many hardships we endure, even to the extent of forsaking food and sleep.
The Quan Yin Method is the greatest Method, but a person without merits cannot learn it. Being able to gain initiation and practice the Quan Yin Method are great gifts that go beyond the universe, beyond the law of karma, and beyond the Three Worlds. Thus, being initiated is not equal to gaining magical power. Even if initiates fail to practice or cannot practice well, they are still better off practicing the Quan Yin Method than practicing asceticism because all other methods lie outside of the Tao. This is why they cannot attain the Tao.