"In the path of Krsna consciousness the first principle is enthusiasm. If you lack enthusiasm then other things will not happen. And you can keep enthusiastic if you follow the rules and regulation and chant regularly Hare Krsna mantra. Otherwise that enthusiasm also will dry. So six things are required for advancing Krsna consciousness. The first thing is enthusiasm. Utsahan dhairyat. And patience. And niscayad, with conviction, firm conviction. Utsahan dhairyat niscayad tat-tat-karma-pravartanat. Following the rules and regulation, chalked out plans. And sato vrtteh, dealing very straightforward. No diplomacy, no politics, no duplicity. That will not help. Sato vrtteh. Vrtteh, his profession should be very straightforward. No underhand dealings. Sato vrtteh and sadhu-sanga, and in the association of devotees.
Six things. Enthusiasm, patience, firm conviction, following the rules and regulations, dealing straightforward, no duplicity, and in association of devotees. If you can keep these six principles always in front then your progress in Krsna consciousness is sure. There is no doubt about it. So as far as possible I've tried to train you and you are doing nice. I'm satisfied. So keep the standard and go on. March forward and Krsna will bless you."
- Srila Prabhupada Letters :: LA,2.august 1970