The more, progress is made in devotional service under the guidance of the Bhagavatas, the more one becomes fixed in the transcendental loving service of the Lord. The messages of the book Bhagavata, therefore, has to be received from the devotee Bhagavata and the combination of these two Bhagavatas will help the neophyte devotee to make progress.
If one comes into contact with Krishna Consciousness and executes the process under the guidance of a bona fide guide, he is sure to go back to Godhead.
Constant engagement in devotional service can be performed only when one is working under the direction of a bona fide spiritual master. The Vedic injunction is that no one can have full knowledge without being under the guidance of an Acarya.
One has to follow the rules and regulations prescribed by the acaryas and thus, under superior guidance, realizing Krishna is fully possible, even in this material existence.