What is not possible to achieve in thousands of lives can be achieved in one moment if there is an opportunity to meet a saintly person. It is therefore enjoined in Vedic literature that one should always try to associate with saintly persons and try to disassociate oneself from the common man, because by one word of a saintly person one can be liberated from material entanglement. A saintly person has the power, because of his spiritual advancement, to give immediate liberation to the conditioned soul. Here Manu admits that all his doubts are now over because Kardama has very kindly described the different duties of individual souls.
(Srimad Bhagavatam---3:22:5----purport).

In Caitanya-caritāmṛta Lord Caitanya says that sādhu-saṅga (CC-2:22:83), the association of a great saintly person, is very important, because even if one is not advanced in knowledge, simply by association with a great saintly person one can immediately make considerable advancement in spiritual life. As a woman, as an ordinary wife, Devahūti became attached to Kardama Muni in order to satisfy her sense enjoyment and other material necessities, but actually she associated with a great personality. Now she understood this, and she wanted to utilize the advantage of the association of her great husband.
((Srimad Bhagavatam---3:23:54---purport).

A saintly person doesn't wish to speak to anyone and everyone, and he is therefore grave and silent. Generally a common man does not need to be advised. Unless one is prepared to take instructions, it is said that a saintly person should not address him, although sometimes, because of great kindness, a saintly person speaks to ordinary men. As for Prahlāda Mahārāja, however, since he was not a common, ordinary man, whatever questions he posed would have to be answered, even by a great and exalted personality. Therefore the saintly brāhmaṇa did not remain silent, but began to answer. These answers, however, were not concocted by him. This is indicated by the words yathā-śrutam, meaning "as I have heard from the authorities." In the paramparā system, when the questions are bona fide the answers are bona fide.
(Srimad Bhagavatam---7:13:23---purport).

Such gross sense enjoyers do not understand that the mind is more subtle than the sense organs and superior to them. Superior to the mind is the intelligence, and behind the intelligence is the false ego, which is far superior to the intelligence and which covers the spirit soul. Philosophical inquiry into the existence of the soul will remain a subject beyond the reach of these gross materialists. The gross sense enjoyers are actually to be counted among the animals, because man has more serious matters to attend to than just titillating his senses. Hence he is considered the most advanced among all the living entities. And indeed we do find that some men comprehend the gravity of human life. They carefully reject chaotic living, emulate the exemplary lives of saintly persons, and direct their lives in such a way as to fulfill the purpose of human life.
(Renunciation Through Wisdom).

The first step in learning the process of surrendering to the Lord is to surrender to the pure devotee of the Lord. In the Caitanya-caritāmṛta (Madhya 20.120 and 122), we find this statement:
sādhu-śāstra-kṛpāya yadi kṛṣṇonmukha haya
sei jīva nistare, māyā tāhāre chāḍaya
māyā-mugdha jīvera nāhi svataḥ kṛṣṇa-jñāna
jīvere kṛpāya kailā kṛṣṇa veda-purāṇa
If the conditioned soul becomes Kṛṣṇa conscious by the mercy of saintly persons who voluntarily preach scriptural injunctions, he is liberated from the clutches of Māyā, who gives him up. The conditioned soul cannot revive his Kṛṣṇa consciousness by his own effort. But out of causeless mercy, Lord Kṛṣṇa compiled the Vedic literature and its supplements, the Purāṇas. All the Vedas and Purāṇas deal with the subject of Lord Kṛṣṇa. In the Lord's own words in the Bhagavad-gītā (15.15), vedaiś ca sarvair aham eva vedyo: "By all the Vedas, I am to be known."
(Renunciation Through Wisdom).