A Kṛṣṇa conscious person well knows that everything belongs to Kṛṣṇa, and thus he is always free from feelings of personal possession. As such, he has no hankering for anything on his own personal account. He knows how to accept things in favor of Kṛṣṇa consciousness and how to reject things unfavorable to Kṛṣṇa consciousness. He is always aloof from material things because he is always transcendental, and he is always alone, having nothing to do with persons not in Kṛṣṇa consciousness. Therefore a person in Kṛṣṇa consciousness is the perfect yogī.
(Bhagavad-Gita---6:10---purport).

As for the knowledge outlined here, the items may be analyzed as follows. Humility means that one should not be anxious to have the satisfaction of being honored by others. The material conception of life makes us very eager to receive honor from others, but from the point of view of a man in perfect knowledge—who knows that he is not this body—anything, honor or dishonor, pertaining to this body is useless. One should not be hankering after this material deception. People are very anxious to be famous for their religion, and consequently sometimes it is found that without understanding the principles of religion one enters into some group which is not actually following religious principles and then wants to advertise himself as a religious mentor. As for actual advancement in spiritual science, one should have a test to see how far he is progressing. He can judge by these items.
(Bhagavad-Gita---13:8-12---purport).

To be fully absorbed in the thought of Kṛṣṇa means clearance of material dirts or hankerings. As a very rich man has no hankerings for small petty things, so also a devotee of Lord Kṛṣṇa, who is guaranteed to pass on to the kingdom of God, where life is eternal, fully cognizant and blissful, naturally has no hankerings for petty material things, which are like dolls or shadows of the reality and are without permanent value. That is the sign of spiritually enriched persons.
(Srimad Bhagavatam---1:6:27---purport).

The material disease is due to hankering after and lording it over material nature. This hankering is due to an interaction of the three modes of nature, and neither the Lord nor the devotees have attachment for such false enjoyment. Therefore, the Lord and the devotees are called nivṛtta-guṇa-vṛtti. The perfect nivṛtta-guṇa-vṛtti is the Supreme Lord because He never becomes attracted by the modes of material nature, whereas the living beings have such a tendency. Some of them are entrapped by the illusory attraction of material nature.
(Srimad Bhagavatam---1:8:27---purport).

All conditioned souls are mad after these different forms of sex desire, and one shall see for himself how much he has been freed from such material hankeringsbased primarily on the sex desire. As a person feels his hunger satisfied after eating each morsel of foodstuff, he must similarly be able to see the degree to which he has been freed from sex desire. The sex desire is diminished along with its various forms by the process of bhakti-yoga because bhakti-yoga automatically, by the grace of the Lord, effectively results in knowledge and renunciation, even if the devotee is not materially very well educated.
(Srimad Bhagavatam---2:2:12----purport).

The devotees of the Lord are by nature peaceful because they have no material hankering. A liberated soul has no hankering, and therefore he has no lamentation. One who wants to possess also laments when he loses his possession. Devotees have no hankerings for material possessions and no hankerings for spiritual salvation. They are situated in the transcendental loving service of the Lord as a matter of duty, and they do not mind where they are or how they have to act. Karmīs, jñānīs and yogīs all hanker to possess some material or spiritual assets. Karmīs want material possessions, jñānīs and yogīs want spiritual possessions, but devotees do not want any material or spiritual assets. They want only to serve the Lord anywhere in the material or spiritual worlds that the Lord desires, and the Lord is always specifically compassionate towards such devotees.
(Srimad Bhagavatam---3:2:15---purport).