Please accept my humble obeisances. All glories to Srila Prabhupada
It is very easy for anyone to claim, "I am a Krishna-bhakta" . But to become a real *Krishna-Bhakta* and remain so thereafter, requires total commitment andLOYALTY to Sri Krishna . Nobody can cheat Bhagavan . Krishna is seated in our heart as *Eye-witness* (Mana-sakshi) or Conscience or Super-soul ( Paramathma). He is just a witness and does not involve with the day-to-day activities .
But, in the case of a Krishna-Bhakta, the Krishna in the heart is ACTIVE. He is pleased by our Bhakti . The more we do *Nama-Japa* , the more active Krishna will be in our heart . This is the secret behind the divine power of pure-devotees like Srila Prabhupada .
There is a highly COFIDENTIAL relationship between Sri Krishna and His Bhakta.
Bhagavan states in Srimad Bhagavad Gita, 18.67 :
"The confidential knowledge, Bhagavad Gita should never be spoken by you to one who is without Austerity, who is without Bhakti, who does not want to listen, or who does not accept Krishna as God ."
The above statement clearly confirm that , there is a CONFIDENTIAL relationship between Krishna and His Bhakta . Austerity is obeying the Vedic rules and practicing the prescribed Vedic-duties. Any "JNANA-YOGI" without faith in Krishna, has no place in Krishna-bhakti . Genuine *Jnana-Yogis* are truly committed to Krishna . See the examples of Adi Shankara and Periaval ( Kanchi seer Chandrasekharendra Sarasvathi swamigal ).
It is the Individual choice . If you are willing to surrender to Sri Krishna and practice GITA in letter and spirit, Krishna-Bhakti is the right option to you . A lot of privileges automatically comes to a Krishna-bhakta . A Bhakta can easily invoke Sri Krishna by doing Nama-Japam . He can make offerings to Bhagavan in temples or at home . He can get Bhagavan's guidance through *nimithams* ( divine symptoms) or by consulting a Vedic-Jyothishi. Sri Krishna always ensures that His Bhakta is on the right track and nobody cheats him/her.