A devotee who is actually advanced in Kṛṣṇa consciousness, who is constantly engaged in devotional service, should not manifest himself, even though he has attained perfection. The idea is that he should always continue to act as a neophyte devotee as long as his material body is there. Activities in devotional service under regulative principles must be followed even by the pure devotee. But when he realizes his actual position in relationship with the Lord, he can, along with the discharging of regulative service, think within himself of the Lord, under the guidance of a particular associate of the Lord, and develop his transcendental sentiments in following that associate.
In this connection, we should be careful about the so-called siddha-praṇālī. The siddha-praṇālī process is followed by a class of men who are not very authorized and who have manufactured their own way of devotional service. They imagine that they have become associates of the Lord simply by thinking of themselves like that. This external behavior is not at all according to the regulative principles. The so-called siddha-praṇālī process is followed by the prākṛta-sahajiyā, a pseudosect of so-called Vaiṣṇavas. In the opinion of Rūpa Gosvāmī, such activities are simply disturbances to the standard way of devotional service.
Śrī Rūpa Gosvāmī says that learned ācāryas recommend that we follow the regulative principles even after the development of spontaneous love for Kṛṣṇa. According to the regulative principles, there are nine departmental activities, as described above, and one should specifically engage himself in the type of devotional service for which he has a natural aptitude. For example, one person may have a particular interest in hearing, another may have a particular interest in chanting, and another may have a particular interest in serving in the temple. So these, or any of the other six different types of devotional service (remembering, serving, praying, engaging in some particular service, being in a friendly relationship or offering everything in one's possession), should be executed in full earnestness. In this way, everyone should act according to his particular taste.