If you get an attack on the emotional vital plane and wrong thoughts, wrong ideas, wrong vibrations enter into you, repeat AUM or the name of the Supreme as fast as possible. Do not chant slowly. When you are trying to cleanse your mind of impurities you must chant as if you were running to catch a moving train.
When you do japa, do not prolong your chanting too much. If you prolong the syllable AUM, you won't have the time to chant five hundred or six hundred times. Just say the syllable in a normal but soulful way so that you will get the vibration.
I know that some of you repeat AUM and 'Supreme' at home. It is wonderful that you practise this, but please practise it aloud, not silently. Let the sound of the mantra vibrate even in your physical ears and permeate your entire body.From:Sri Chinmoy,Prayer-world, mantra-world and japa-world, Agni Press, 1974
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