"So this is our process. This is the perfect process. You don't require any artificial method to think of God. It is natural. If you simply come to the temple daily, chant in the front of the Deity, Hare Krishna, Hare Krishna, Krishna Krishna, Hare Hare/ Hare Rama, Hare Rama, Rama Rama, Hare Hare, then you become advanced immediately. Sa vai manah krsna-padaravindayor vacamsi vaikuntha-gunanuvarnane [SB 9.4.18]. Now there are books. Either you chant, sit down in the Deity room in front of the Deity, see how arotika is going on, how Deity is nicely dressed with flower, ornaments, so if you constantly be engaged in thinking of the Deity, that is first-class meditation."
(Srila Prabhupada lecture, Nairobi, October 29, 1975)