Srila Prabhupada- If a disciple is very serious to execute the mission of the spiritual master, he immediately associates with the Supreme Personality of Godhead by vāṇī or vapuḥ . This is the only secret of success in seeing the Supreme Personality of Godhead. Instead of being eager to see the Lord in some bush of Vṛndāvana while at the same time engaging in sense gratification, if one instead sticks to the principle of following the words of the spiritual master, he will see the Supreme Lord without difficulty.

(SB 4.8.51p)