'One strong urge from within will be sufficient'

" Always avoid mechanical repetition ( of affirmations). This meaning is found in the Biblical injunction ' Thou shalt not take the name of the Lord thy God in vain' Exodus 20:7   Repeat affirmations firmly and with intensity and sincerity until such power is gained that one command, one strong urge from within, will be sufficient to change your body cells and to move your soul to performance of miracles."
  ---- writing from Scientific Healing Affirmations by Sri Paramhansa Yogananda