Srila Prabhupada said, "A devotee can learn to do anything if they repeat this prayer before they begin any service." And then he spoke this wonderful prayer:

om ajnana-timirandhasya jnananjana-salakaya
caksur unmilitam yena tasmai sri-gurave namah
sri-caitanya-mano-'bhistam sthapitam yena bhu-tale
svayam rupah kada mahyam dadati sva-padantikam

(Recalled by Yamuna D.D.; quoted in "Yamuna Devi" by Dinatarini D.D., vol. 1 p. 101)