This is from my ancient notes (I've been studying Japan for almost a lifetime). I'm afraid I don't know the source:
"Shinto encourages simplicity and cleanliness as signs of inner goodness. There is a steady emphasis on spiritual and physical purity. Shinto asks its followers to be pure in heart and mind and to be grateful for the blessings of kami. How they follow these obligations is left to the consciousness of the individual.
The purpose of Shinto worship is to maintain a close harmony among people, nature, and kami."
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Tenrikyo doctrine teaches that wrong use of the mind causes illness and purification of the mind relieves it.
Eight wrong uses of the mind: miserliness or ungenerous behavior, covetousness, hatred, self-love, enmity, anger, greed, and arrogance.