It is said in the Gita that after exhausting the results of their pious activities, all the demigods, who are inhabitants of the higher planetary system, have to come back again to this earth
SB Canto 4
Since all the demigods who are situated in the higher planetary system will have to come down again, they are all envious of my being elevated to Vaikuṇṭhaloka by devotional service. These intolerant demigods have dissipated my intelligence, and only for this reason could I not accept the genuine benediction of the instructions of Sage Nārada.
As shown by many instances in the Vedic literature, when a person undergoes severe austerities, the demigods become very much perturbed because they are always afraid of losing their posts as the predominating deities of the heavenly planets. It is known to them that their position in the higher planetary system is impermanent, as it is stated in the Bhagavad-gītā, Ninth Chapter (kṣīṇe puṇye martya-lokaṁ viśanti). It is said in the Gītā that after exhausting the results of their pious activities, all the demigods, who are inhabitants of the higher planetary system, have to come back again to this earth.
It is a fact that the demigods control the different activities of the limbs of our bodies. Factually we are not free even in moving our eyelids. Everything is controlled by them. Dhruva Mahārāja's conclusion is that these demigods, being envious of his superior position in devotional service, conspired against him to pollute his intelligence, and thus although he was the disciple of a great Vaiṣṇava, Nārada Muni, he could not accept Nārada's valid instructions. Now Dhruva Mahārāja regretted very much that he had neglected these instructions. Nārada Muni had asked him, "Why should you bother about insult or adoration from your stepmother?" He of course said to Dhruva Mahārāja that since Dhruva was only a child, what did he have to do with such insult or adoration? But Dhruva Mahārāja was determined to achieve the benediction of the Supreme Personality of Godhead, and therefore Nārada advised him to go back home for the time being, and in mature time he could try to practice devotional service. Dhruva Mahārāja regretted that he had rejected the advice of Nārada Muni and was adamant in asking him for something perishable, namely revenge against his stepmother for her insult, and possession of the kingdom of his father.
Dhruva Mahārāja regretted very much that he could not take seriously the instruction of his spiritual master and that his consciousness was therefore contaminated. Still, the Lord is so merciful that due to Dhruva's execution of devotional service He offered Dhruva the ultimate Vaiṣṇava goal.