Because the common man is unable to control the senses and the mind, it is his duty to seek the shelter of a great soul or a great devotee of the Lord and just try to please him. That will make his life perfect. A common man cannot rise to the topmost stage of spiritual perfection simply by following the rituals and religious principles. He has to take shelter of a bona fide spiritual master and work under his direction faithfully and sincerely; then he becomes perfect, without a doubt.
(Srila Prabhupada; Srimad-Bhagavatam 3.22.6, Purport)