Thus one has to select a bona fide spiritual master and become enlightened to his original consciousness. In this way the individual soul can understand that he is always subordinate to the Supersoul. As soon as he declines to remain subordinate and tries to become an enjoyer, he begins his material conditioning. When he abandons this spirit of being an individual owner or enjoyer, he becomes situated in his liberated state. The word sva-sthaḥ, meaning "situated in one's original position," is very significant in this verse. When one gives up his unwanted attitude of superiority, he becomes situated in his original position. The word tad-vyabhicāreṇa is also significant, for it indicates that when one is separated from God due to disobedience, his real sense is lost. Again, by the grace of Kṛṣṇa and guru, he can be properly situated in his liberated position.
(Srimad Bhagavatam------4:28:64------purport).

Another bona fide process is to abide strictly by the orders of the spiritual master and engage in the Lord's service. Then the mind will be automatically controlled. Śrī Caitanya Mahāprabhu has instructed Śrīla Rūpa Gosvāmī:
brahmāṇḍa bhramite kona bhāgyavān jīva
guru-kṛṣṇa-prasāde pāya bhakti-latā-bīja
(CC.2:19:151)
When one receives the seed of devotional service by the mercy of the guru and Kṛṣṇa, the Supreme Personality of Godhead, one's real life begins. If one abides by the orders of the spiritual master, by the grace of Kṛṣṇa he is freed from service to the mind.
(Srimad Bhagavatam------5:11:17------purport).

The Lord, who is situated in everyone's heart, is so kind that if one has ever rendered service to Him, the Lord never forgets him. Thus the Lord, from within, gave Ajāmila the opportunity to name his youngest son Nārāyaṇa so that in affection he would constantly call "Nārāyaṇa! Nārāyaṇa!" and thus be saved from the most fearful and dangerous condition at the time of his death. Such is the mercy of Kṛṣṇa. Guru-kṛṣṇa-prasāde pāya bhakti-latā-bīja: (CC.2:19:151) by the mercy of the guru and Kṛṣṇa, one receives the seed of bhakti. This association saves a devotee from the greatest fear. In our Kṛṣṇa consciousness movement we therefore change a devotee's name to a form that reminds him of Viṣṇu. If at the time of death the devotee can remember his own name, such as Kṛṣṇadāsa or Govinda dāsa, he can be saved from the greatest danger. Therefore the change of names at the time of initiation is essential. The Kṛṣṇa consciousness movement is so meticulous that it gives one a good opportunity to remember Kṛṣṇa somehow or other.
(Srimad Bhagavatam------6:2:32------purport).

Significant in this verse are the words jñānāsim acyuta-balaḥ. Jñānāsim, the sword of knowledge, is given by Kṛṣṇa, and when one serves the guru and Kṛṣṇa in order to hold the sword of Kṛṣṇa's instructions, Balarāma gives one strength. Balarāma is Nityānanda. Vrajendra-nandana yei, śacī-suta haila sei, balarāma ha-ila nitāi. This bala—Balarāma—comes with Śrī Caitanya Mahāprabhu, and both of Them are so merciful that in this age of Kali one may very easily take shelter of Their lotus feet. They come especially to deliver the fallen souls of this age. pāpī tāpī yata chila, hari-nāme uddhārila. Their weapon is saṅkīrtana, hari-nāma. Thus one should accept the sword of knowledge from Kṛṣṇa and be strong with the mercy of Balarāma. We are therefore worshiping Kṛṣṇa-Balarāma in Vṛndāvana. In the Muṇḍaka Upaniṣad (3.2.4) it is said:
nāyam ātmā bala-hīnena labhyo
na ca pramādāt tapaso vāpy aliṅgāt
etair upāyair yatate yas tu vidvāṁs
tasyaiṣa ātmā viśate brahma-dhāma
One cannot attain the goal of life without the mercy of Balarāma. Śrī Narottama dāsa Ṭhākura therefore says, nitāiyera karuṇā habe, vraje rādhā-kṛṣṇa pābe: when one receives the mercy of Balarāma, Nityānanda, one can attain the lotus feet of Rādhā and Kṛṣṇa very easily.
(Srimad Bhagavatam------7:15:45------purport).

A Vaiṣṇava always follows the order of guru and Kṛṣṇa. Śrī Caitanya-caritāmṛta was written by Kṛṣṇadāsa Kavirāja Gosvāmī by their mercy. Kṛṣṇadāsa Kavirāja Gosvāmī considered all the devotees that have been mentioned to be his preceptor gurus, or spiritual masters, and Madana-gopāla (Śrī Madana-mohana vigraha) is Kṛṣṇa Himself. Thus he took permission from both of them, and when he received the mercy of both guru and Kṛṣṇa, he was able to write this great literature, Śrī Caitanya-caritāmṛta. This example should be followed. Anyone who attempts to write about Kṛṣṇa must first take permission from the spiritual master and Kṛṣṇa. Kṛṣṇa is situated in everyone's heart, and the spiritual master is His direct external representative. Thus Kṛṣṇa is situated antar-bahiḥ, within and without.
(Sri Caitanya Caritamrta------1:8:73-------purport).

A devotee who has received even a small fraction of the mercy of the Lord can understand Him. Others may engage in theoretical speculation to understand the Lord, but they cannot know anything about Him. Although Mahārāja Pratāparudra was very eager to see Śrī Caitanya Mahāprabhu, the Lord refused to see him. But when Śrī Caitanya Mahāprabhu saw the King engaged in menial service for Lord Jagannātha, He became very happy. Thus the King became eligible to receive Śrī Caitanya Mahāprabhu's mercy. If a devotee accepts Lord Śrī Caitanya Mahāprabhu as the universal guru and Lord Jagannātha as the Supreme Personality of Godhead Kṛṣṇa, he is benefited by the combined mercy of Kṛṣṇa and guru. That is stated by Śrī Caitanya Mahāprabhu in His instructions to Rūpa Gosvāmī
brahmāṇḍa bhramite kona bhāgyavān jīva
guru-kṛṣṇa-prasāde pāya bhakti-latā-bīja
The seed of devotional service fructifies and becomes a transcendental creeper. Finally it reaches the lotus feet of the Lord in the spiritual sky. This seed is obtained by the mercy of the Lord and the guru. By the Lord's mercy one gets the association of a bona fide guru, and by the mercy of the guru one gets a chance to render devotional service. Devotional service, the science of bhakti-yoga, carries one from this material world to the spiritual world.
(Sri Caitanya Caritamrta------2:13:18-------purport).

There are two kinds of highly elevated devotees, called sādhana-siddha and kṛpā-siddha. Sādhana-siddha refers to one who has become a devotee by regular execution of the regulative principles mentioned in the śāstras, as ordered and directed by the spiritual master. If one regularly executes such devotional service, he will certainly attain perfection in due course of time. But there are other devotees, who may not have undergone all the required details of devotional service but who, by the special mercy of guru and Kṛṣṇa—the spiritual master and the Supreme Personality of Godhead—have immediately attained the perfection of pure devotional service. Examples of such devotees are the yajña-patnīs, Mahārāja Bali and Śukadeva Gosvāmī. The yajña-patnīs were the wives of ordinary brāhmaṇas engaged in fruitive activities. Although the brāhmaṇas were very learned and advanced in Vedic knowledge, they could not achieve the mercy of Kṛṣṇa-Balarāma, whereas their wives achieved complete perfection in devotional service, despite their being women. Similarly, Vairocani, Bali Mahārāja, received the mercy of Prahlāda Mahārāja, and by Prahlāda Mahārāja's mercy he also received the mercy of Lord Viṣṇu, who appeared before him as a brahmacārī beggar. Thus Bali Mahārāja became a kṛpā-siddha because of the special mercy of both guru and Kṛṣṇa. Caitanya Mahāprabhu confirms this favor: guru-kṛṣṇa-prasāde pāya bhakti-latā-bīja (CC.2:19:151). Bali Mahārāja, by the grace of Prahlāda Mahārāja, got the seed of devotional service, and when that seed developed, he achieved the ultimate fruit of that service, namely love of Godhead (premā pum-artho mahān), immediately upon the appearance of Lord Vāmanadeva. Bali Mahārāja regularly maintained devotion for the Lord, and because he was purified, the Lord appeared before him. Because of unalloyed love for the Lord, he then immediately decided, "I shall give this little dwarf brāhmaṇa whatever He asks from me." This is a sign of love. Thus Bali Mahārāja is understood to be one who received the highest perfection of devotional service by special mercy.
(Srimad Bhagavatam------8:20:3------purport).

It is further recommended in the Muṇḍaka Upaniṣad, tad-vijñānārthaṁ sa gurum evābhigacchet: (MU 1.2.12) "To understand that transcendental science, one must approach a bona fide spiritual master." Thus this method of submissively receiving transcendental confidential knowledge is not merely based on mental speculation. In this regard, Śrī Caitanya Mahāprabhu told Rūpa Gosvāmī:
brahmāṇḍa bhramite kona bhāgyavān jīva
guru-kṛṣṇa-prasāde pāya bhakti-latā-bīja
"In the course of traversing the universal creation of Brahmā, some fortunate soul may receive the seed of bhakti-latā, the creeper of devotional service. This is all by the grace of guru and Kṛṣṇa." The material world is a place of confinement for the living entities who are by nature ānandamaya, pleasure-seeking. They actually want to be free from the confinement of this world of conditional happiness, but not knowing the process of liberation, they are bound to transmigrate from one species of life to another and from one planet to another. In this way the living entities are wandering throughout the material universe. When by good fortune one comes in contact with a pure devotee and hears from him patiently, one begins to follow the path of devotional service. Such an opportunity is offered to a person who is sincere. The International Society for Krishna Consciousness is giving such a chance to humanity at large. If by fortune one takes advantage of this opportunity to engage in devotional service, the path of liberation immediately opens.
(Nectar of Instruction).

One should not be impatient in Kṛṣṇa consciousness. Indeed, this Kṛṣṇa consciousness movement was started single-handedly, and in the beginning there was no response, but because we continued to execute our devotional activities with patience, people gradually began to understand the importance of this movement, and now they are eagerly participating. One should not be impatient in discharging devotional service, but should take instructions from the spiritual master and execute them with patience, depending on the mercy of guru and Kṛṣṇa. The successful execution of Kṛṣṇa conscious activities requires both patience and confidence. A newly married girl naturally expects offspring from her husband, but she cannot expect to have them immediately after marriage. Of course, as soon as she is married she can attempt to get a child, but she must surrender to her husband, confident that her child will develop and be born in due time. Similarly, in devotional service surrender means that one has to become confident. The devotee thinks, avaśya rakṣibe kṛṣṇa: "Kṛṣṇa will surely protect me and give me help for the successful execution of devotional service." This is called confidence.
(Nectar of Instruction).

When one becomes a devotee, he achieves the greatest benediction because he completely averts the repetition of birth and death. Therefore the father who trains his child in Kṛṣṇa consciousness is the most benevolent father in this world. It is said:
janame janame sabe pitā mātā pāya
kṛṣṇa guru nahi mile bhaja hari ei
Everyone gets a father and mother, but if one gets the benediction of Kṛṣṇa and guru, he can conquer material nature and return home, back to Godhead.
(Srimad Bhagavatam------9:18:43------purport).