He says that devotional service is a continual process from one's previous life. No one can take to devotional service unless he has had some previous connection with it. For example, suppose in this life I practice devotional service to some extent. Even though it is not one-hundred-percent perfectly performed, whatever I have done will not be lost. In my next life, from the very point where I stop in this life, I shall begin again. In this way there is always a continuity. But even if there is no continuity, if only by chance a person takes interest in a pure devotee's instruction, he can be accepted and can advance in devotional service. Anyway, for persons who have a natural taste for understanding books like Bhagavad-gītā and Śrīmad-Bhāgavatam, devotional service is easier than for those who are simply accustomed to mental speculation and argumentative processes.
To support this statement there are many authoritative assertions by the learned scholars of bygone ages. According to their general opinion, a person may become governed by certain convictions derived by his own arguments and decisions. Then another person, who may be a greater logician, will nullify these conclusions and establish another thesis. In this way the path of argument will never be safe or conclusive. Śrīmad-Bhāgavatam recommends, therefore, that one follow in the footsteps of the authorities.
Here is a general description of devotional service given by Śrī Rūpa Gosvāmī in his Bhakti-rasāmṛta-sindhu. Previously, it has been stated that devotional service can be divided into three categories—namely devotional service in practice, devotional service in ecstasy and devotional service in pure love of God. Now Śrī Rūpa Gosvāmī proposes to describe devotional service in practice.