The Supreme Godhead is unconquerable; no one can conquer the Lord. But He voluntarily accepts subordination to the devotional qualities of His devotees. For example, Lord Krsna accepted subordination to the control of mother Yasoda because she was a great devotee. The Lord likes to be under the control of His devotees. In the Caitanya-caritamrta it is said that everyone comes before the Lord and offers Him exalted prayers, but the Lord does not feel as pleased when offered such prayers as He does when a devotee, out of pure love, chastises Him as a subordinate. The Lord forgets His exalted position and willingly submits to His pure devotee. Dhruva Maharaja conquered the Supreme Lord because at a very tender age, only five years old, he underwent all the austerities of devotional service. This devotional service was of course executed under the direction of a great sage, Narada. This is the first principle of devotional serviceadau gurv-asrayam. In the beginning one must accept a bona fide spiritual master, and if a devotee follows strictly the direction of the spiritual master, as Dhruva Maharaja followed the instruction of Narada Muni, then it is not difficult for him to achieve the favor of the Lord.