Material achievements are not the ultimate goal of devotional service. The ultimate goal of devotional service is love of Godhead. Therefore although Prahlāda Mahārāja, Dhruva Mahārāja, Ambarīṣa Mahārāja, Yudhiṣṭhira Mahārāja and many devotee kings were materially very opulent, they accepted their material opulence in the service of the Lord, not for their personal sense gratification. Of course, possessing material opulence is always fearful because under the influence of material opulence one may be misdirected from devotional service. Nonetheless, a pure devotee (anyābhilāṣitā-śūnyam (Bhakti-rasāmṛta-sindhu 1.1.11)) is never misdirected by material opulence. On the contrary, whatever he possesses he engages one hundred percent in the service of the Lord. When one is allured by material possessions, they are considered to be given by māyā, but when one uses material possessions fully for service, they are considered God's gifts, or facilities offered by Kṛṣṇa for enhancing one's devotional service.
Śrī Caitanya Mahāprabhu continued, “The Supreme Personality of Godhead is the central point of all relationships, acting in devotional service to Him is one's real occupation, and the attainment of love of Godhead is the ultimate goal of life. These three subject matters are described in the Vedic literature.
(SRI CAITANYA CARITAMRTA------2:6:178-------TRANSLATION).
"The goal of love of Godhead is not to become materially rich or free from material bondage. The real goal is to be situated in devotional service to the Lord and to enjoy transcendental bliss."
(SRI CAITANYA CARITAMRTA------2:20:142-------TRANSLATION).
One may enjoy fruitive activities, liberation, jñāna, or the perfection of the yoga system, but if one becomes very intelligent he will give up all these paths and engage himself in sincere devotional service to the Lord. The Śrīmad-Bhāgavatam also confirms (2.3.10) that even if a person desires material enjoyment or liberation, he should engage in devotional service. Those who are ambitious to derive material benefit from devotional service are not pure devotees, but because they are engaged in devotional service they are considered fortunate. They do not know that the result of devotional service is not material benediction, but because they engage themselves in the devotional service of the Lord they ultimately come to understand that material enjoyment is not the goal of devotional service. Kṛṣṇa Himself says that persons who want some material benefit in exchange for devotional service are certainly foolish because they want something which is poisonous for them. The real goal of devotional service is love of Godhead, and although a person may desire material benefits from Kṛṣṇa, the Lord, being all-powerful, considers the person's position and gradually liberates him from a materially ambitious life and engages him more in devotional service. When one is actually engaged in devotional service, he forgets his material ambitions and desires.
(TEACHINGS OF LORD CAITANYA).