The association of devotees is the most important element in learning Krishna Consciousness way of life. By association with undesirable companions we have learned so many bad habits and similarly by association with pure persons or devotees we can become purified of our acquired bad habits. So constant association and working cooperatively with devotees is the prime and easy method to relearn our original good habit of Krishna Consciousness.
Everyone should be friendly for the service of the Lord. Everyone should praise another's service to the Lord and not be proud of his own service. This is the way of Vaishnava thinking, Vaikuntha thinking. There may be rivalries and apparent competition between servants in performing service, but in the Vaikuntha planets the service of another servant is appreciated, not condemned. This is Vaikuntha competition.
Both King Indra and Maharaja Prithu were envious and angry with each other, but since both of them were Vaishavas, or servants of Lord Vishnu, it was their duty to adjust the cause of their envy. This is also a first-class example of cooperative behavior between Vaishnavas. In the present days, however, because people are not Vaishavas, they fight perpetually among one another and are vanquished without finishing the mission of human life i.e., Go back to home Back to God head.
There is no question of enmity between Krishna's servants. Everyone should be allowed to render service to the Lord to the best of his ability, and everyone should appreciate the service of others. Such are the activities of Vaikuntha. Since everyone is a servant, everyone is on the same platform and is allowed to serve the Lord according to his ability.
(Compilations from Srila Prabhupada's Teachings)