The natural position of the living entity is to serve the Lord in a transcendental loving attitude. When the living entity wants to become Krishna Himself or imitate Krishna, he falls down into the material world. Since Krishna is the supreme father, His affection for the living entity is eternal. When the living entity falls down into the material world, the Supreme Lord, through His svamsa expansion (Paramatma), keeps company with the living entity. In this way the living entity may some day return home, back to Godhead. By misusing his independence, the living entity falls down from the service of the Lord and takes a position in this material world as an enjoyer. That is to say, the living entity takes his position within a material body. Wanting to take a very exalted position, the living entity instead becomes entangled in a repetition of birth and death. He selects his position as a human being, a demigod, a cat, a dog, a tree, etc. In this way the living entity selects a body out of the 8,400,000 forms and tries to satisfy himself by a variety of material enjoyment. The Supersoul, however, does not like him to do this. Consequently, the Supersoul instructs him to surrender unto the Supreme Personality of Godhead. The Lord then takes charge of the living entity. But unless the living entity is uncontaminated by material desires, he cannot surrender to the Supreme Lord.
Source: A.C. Bhaktivedanta Swami Prabhupada (2014 edition), “Srimad Bhagavatam”, Fourth Canto, Chapter 28 – Text 53