The ancient masters said that if you do not foster dislike and unhappy thoughts, your mind will not be in turmoil. If your mind is not in turmoil, the air [or energy of your body] will not be disturbed. If the air is not disturbed, other physical elements of your body will not experience disharmony. Harmonious elements [in turn] will help the mind stay free from turmoil. Then the wheel of joy will keep revolving.

-- Third Dodrupchen, Jikme Tenpe Nyima