The spirit soul bewildered by the influence of false ego thinks himself the doer of activities that are in actuality carried out by the three modes of material nature.
(Bhagavad-Gita---3:27---purport).

Mind is the center of all the activities of the senses, and thus when we hear about sense objects the mind generally becomes a reservoir of all ideas of sense gratification; and, as a result, the mind and the senses become the repositories of lust. Next, the intelligence department becomes the capital of such lustful propensities. Intelligence is the immediate next—door neighbor of the spirit soul. Lusty intelligence influences the spirit soul to acquire the false ego and identify itself with matter, and thus with the mind and senses. The spirit soul becomes addicted to enjoying the material senses and mistakes this as true happiness.
(Bhagavad-Gita---3:40---purport).

In the material existence of life, one is certainly influenced by propensities for lust and desire for dominating the resources of material nature. Desire for overlording and for sense gratification is the greatest enemy of the conditioned soul; but by the strength of Kṛṣṇa consciousness, one can control the material senses, the mind and the intelligence.
(Bhagavad-Gita---3:43---purport).

One is considered to be a failure in life as long as he makes no inquiry about his real identity. As long as he does not know his real identity, he has to work for fruitive results for sense gratification, and as long as one is engrossed in the consciousness of sense gratification one has to transmigrate from one body to another. Although the mind may be engrossed in fruitive activities and influenced by ignorance, one must develop a love for devotional service to Vāsudeva. Only then can one have the opportunity to get out of the bondage of material existence.
(Bhagavad-Gita---5:2---purport).

The Lord is not partial toward anyone. Everything depends on one's practical performance of duties in Kṛṣṇa consciousness, which helps one control the senses in every respect and conquer the influence of desire and anger. And one who stands fast in Kṛṣṇa consciousness, controlling the abovementioned passions, remains factually in the transcendental stage, or brahma-nirvāṇa. The eightfold yoga mysticism is automatically practiced in Kṛṣṇa consciousness because the ultimate purpose is served.
(Bhagavad-Gita---5:29---purport).

The sky may be the biggest manifestation we can conceive. And in that sky the wind or air is the biggest manifestation in the cosmic world. The movement of the airinfluences the movements of everything. But although the wind is great, it is still situated within the sky; the wind is not beyond the sky. Similarly, all the wonderful cosmic manifestations are existing by the supreme will of God, and all of them are subordinate to that supreme will. As we generally say, not a blade of grass moves without the will of the Supreme Personality of Godhead.
(Bhagavad-Gita---9:6----purport).