The living being is the marginal energy of the absolute Personality of Godhead, and he can spend his conserved energy either externally or internally. When spent internally the energy is identified with the internal energy of the Personality of Godhead, but the same conserved energy, when spent for His external energy, is identified with that external energy. All energies — internal, external, and marginal — are emanations from Him, the Supreme, and they act differently to prove diversity in unity. The unity is the Lord, and the energies represent diversity. The Lord is so powerful that He can do anything and everything merely by His sweet will alone. As mentioned above, everything is done by His energies in a natural way, with full knowledge and complete perfection. That is the information we have from the Vedic literatures.
The internal energy and the marginal energy are of the same superior quality, but the external energy is inferior in quality. That is the information we have from the  Bhagavad-gītā . Because the living entity is classified as marginal energy and is of the same quality as the internal energy, it is quite natural for him to cooperate with the internal energy. But when the living entity prefers to cooperate with the external energy, he is put into difficulty. By the process called  pratyāhāra  (diversion),  yoga  diverts our energies from external to the internal.
The energy of our senses is meant to be diverted, not stopped. The senses are to be purified so that they serve the Lord instead of disturbing His settled harmony. The entire cosmic harmony is a
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