In Vedic literature the living entity is called jivatma and Brahman, but he is never called Parabrahman. The living entity (jivatma) takes different positions — sometimes he merges into the dark material nature and identifies himself with matter, and sometimes he identifies himself with the superior, spiritual nature. Therefore he is called the Supreme Lord’s marginal energy. According to his identification with material or spiritual nature, he receives a material or spiritual body. In material nature he may take a body from any of the 8,400,000 species of life, but in spiritual nature he has only one body. In material nature he is manifested sometimes as a man, demigod, animal, beast, bird, etc., according to his karma. To attain material heavenly planets and enjoy their facilities, he sometimes performs sacrifices (yajna), but when his merit is exhausted he returns to earth again in the form of a man. This process is called karma.
Another meaning of guna is rope; it is to be understood that the conditioned soul is tightly tied by the ropes of illusion. A man bound by the hands and feet cannot free himself — he must be helped by a person who is unbound. Because the bound cannot help the bound, the rescuer must be liberated. Therefore, only Lord Krishna, or His bonafide representative the spiritual master, can release the conditioned soul. Without such superior help, one cannot be freed from the bondage of material nature. Devotional service, or Krishna consciousness, can help one gain such release. Krishna, being the Lord of illusory energy, can order this insurmountable energy to release the conditioned soul. He orders this release out of His causeless mercy on the surrendered soul and out of His paternal affection for the living entity, who is originally a beloved son of the Lord. Therefore surrender unto the lotus feet of the Lord is the only means to get free from the clutches of the stringent material nature
As a strong wind sweeps away a boat on the water, even one of the roaming senses on which the mind focuses can carry away a man’s intelligence
Unless all of the senses are engaged in the service of the Lord, even one of them engaged in sense gratification can deviate the devotee from the path of transcendental advancement. As mentioned in the life of Maharaja Ambarisha, all of the senses must be engaged in Krishna consciousness, for that is the correct technique for controlling the mind.