"To make us wholly devoted devoted to Krsna's name, Sri Gaurangadeva, the combined form of Radha Govinda, came to this world. But if we disregard His teachings and show no interest in sri-nama-seva, we will never attain auspiciousness. Sri-nama-sankirtan is the best sadhana. If other sadhanas help us in krsna-sankirtana, then they deserve to called sadhana: otherwise there are simply impediments to sadhana. Sri Krsna nama sankitana is the emperor of sadhanas. It is the only infallible sadhana capaable of bringing us to siddhi. Sriman Mahaprabhu did not speak of teaching arcana, but in
Here is a nice story from the life and teachings of Srila Bhaktisiddhanta Sarasvati Thakur:
Once some devotees were sent to establish a preaching center in Bengal. They worked day and night, equipping it as a beautiful temple. When Srila Bhaktisiddhanta Sarasvati arrived to install the Deities, he was very pleased and asked about one brahmacari who had worked hard on the preparations. The disciples told him, "Master, he became entangled with a lady. We rebuked him so much for his behavior that he fled from this place."