The real test of our Nitai Bhakti is to not feel negativity and depression towards anyone when we are tested or hurt, happily continue our daily sadhana, and be content in whatever sevas we can do ourselves for Doyal Nitai and Guruvarga, or by doing those which are specifically given to us by our Gurus and Nitai. No one can take away our soul's eternal right to do our own daily sadhana and go to the spiritual world, except our ownselves, which is in fact our first and foremost daily seva and duty. It does not matter so much if we can do any other sevas or not, as they are only meant to assist our daily sadhana. हरे कृष्ण. जय निताइ.
Harinam there are 3 stages: Namabhasa, Namaparadha, and Shuddha Nam. But in Nitainam there is only Shuddha Nam from the beginning even for the most fallen because Nitai is completely offering Himself to the offenders unconditionally.
Shrimad Bhagavatam (8.3.20)
ekantino yasya na kancanartham
vanchanti ye vai bhagavat-prapannah
aty-adbhutam tac-caritam sumangalam
Unalloyed devotees, who have no desire other than to serve the Lord, worship Him in full surrender and always SING about His activities, which are most wonderful and auspicious, and by singing merge in an ocean of transcendental bliss. Such devotees never ask the Lord for any other benediction.
Srila Prabhupada reached so many souls with the impossible message of Krishna Bhakti only because he started in the park, continued, and ended with KIRTAN in all his temples. All 18,000 verses of Bhagwat end with the glory of Kirtan. Without Kirtan, no one can become successful in preaching or practicing Japa, Lekhan, or Shravan in any form. Please try this Kirtanmoy Japa, Lekhan, and Shravan as recommended by me in this audio and you will float in bliss.
PS. Another benefit of doing Kirtanmoy Japa, Lekhan, and Shravan is that one does not need to keep a track of doing Kirtan separately as it is already accomplished in abundance.