Lord Caitanya recommends that one should scrupulously renounce the association of unwanted persons and completely take shelter of the Supreme Lord Kṛṣṇa. This same instruction is given to Arjuna in the last verses of Bhagavad-gītā in which Kṛṣṇa says:"Just give up everything and surrender unto Me. I will take care of you and protect you from all the reactions to sinful activities." (BG 18.66) The Lord is very kind to His devotees, and He is very grateful, able and magnanimous. It is our duty to believe His words, and if we are intelligent and educated enough, we will follow His instructions without hesitation. In Śrīmad-Bhāgavatam (10.48.26) Akrūra tells Kṛṣṇa:
- kaḥ paṇḍitas tvad aparaṁ śaraṇaṁ samīyād
- bhakta-priyād ṛta-giraḥ suhṛdaḥ kṛta-jñāt
- sarvān dadāti suhṛdo bhajato 'bhikāmān
- ātmānam apy upacayāpacayau na yasya
"Who can surrender to anyone other than Yourself? Who is as dear, truthful, friendly and grateful as You? You are so perfect and complete that even though You give Yourself to Your devotee, You are still full and perfect. You can satisfy all the desires of Your devotee and even deliver Yourself unto him." A person who is intelligent and able to understand the philosophy of Kṛṣṇa consciousness naturally gives up everything and takes to the shelter of Kṛṣṇa. In this regard, Lord Caitanya recites a verse spoken by Uddhava in Śrīmad-Bhāgavatam (3.2.23): "How can one take shelter of anyone but Kṛṣṇa? He is so kind. Even though Bakāsura's sister planned to kill Kṛṣṇa when He was an infant by applying poison to her breast and offering it to Kṛṣṇa to suck and thus die, still that heinous woman received salvation and was elevated to the same platform as Kṛṣṇa's own mother." This verse refers to the time when Pūtanā planned to kill Kṛṣṇa. Kṛṣṇa accepted the poisonous breasts of that demonic woman, and when He sucked the milk from her, He sucked out her life also. Nonetheless Pūtanā was elevated to the same position as Kṛṣṇa's own mother.
There is no essential difference between a fully surrendered soul and a person in the renounced order of life. The only difference is that a fully surrendered soul is completely dependent upon Kṛṣṇa. There are six basic guidelines for surrender. The first is that one should accept everything that is favorable for the discharge of devotional service, and one should be determined to accept the process. The second is that one should give up everything that is unfavorable to the discharge of devotional service, and one should be determined to give it all up. Thirdly, one should be convinced that only Kṛṣṇa can protect him and should have full faith that the Lord will give that protection. An impersonalist thinks that his actual identity is in being one with Kṛṣṇa, but a devotee does not destroy his identity in this way. He lives with full faith that Kṛṣṇa will kindly protect him in all respects. Fourthly, a devotee should always accept Kṛṣṇa as his maintainer. Those who are interested in the fruits of activities generally expect protection from the demigods, but a devotee of Kṛṣṇa does not look to any demigod for protection. He is fully convinced that Kṛṣṇa will protect him from all unfavorable circumstances. Fifth, a devotee is always conscious that his desires are not independent; unless Kṛṣṇa fulfills them, they cannot be fulfilled. Lastly, one should always think of himself as the most fallen among souls so that Kṛṣṇa will take care of him.
Such a surrendered soul should take shelter of a holy place like Vṛndāvana, Mathurā, Dvārakā, Māyāpur, etc., and should surrender himself unto the Lord, saying, "My Lord, from today I am Yours. You can protect me or kill me as You like." A pure devotee takes shelter of Kṛṣṇa in such a way, and Kṛṣṇa is so grateful that He accepts him and gives him all kinds of protection. This is confirmed in Śrīmad-Bhāgavatam (11.29.34) where it is said that if a person who is about to die takes full shelter of the Supreme Lord and places himself fully under His care, he actually attains immortality and becomes eligible to associate with the Supreme Lord and enjoy transcendental bliss.