You must engage in sadhana. Without sadhana, just running around, engaging your body, will not bring about the desired state of consciousness. "Sadhana" means chanting daily and endeavoring to chant attentively. It also means to somehow or other fix the mind on Krishna's form, pastimes, or qualities "every day". Yes, it is true that preaching is also sadhana if we are speaking about Krishna's instructions, form, qualities, and pastimes. Speaking about Krishna also brings about remembrance.
August 6, 2003, Letter