BG 18.66
sarva-dharman parityajya mam ekam saranam vraja

Abandon all varieties of religion and just surrender unto Me

Purport: (…) According to the devotional process, one should simply accept such religious principles that will lead ultimately to the devotional service of the Lord. One may perform a particular occupational duty according to his position in the social order, but if by executing his duty one does not come to the point of Krsna consciousness, all his activities are in vain.

Anything that does not lead to the perfectional stage of Krsna consciousness should be avoided. One should be confident that in all circumstances Krsna will protect him from all difficulties. There is no need of thinking how one should keep the body and soul together. Krsna will see to that. One should always think himself helpless and should consider Krsna the only basis for his progress in life. As soon as one seriously engages himself in devotional service to the Lord in full Krsna consciousness, at once he becomes freed from all contamination of material nature. There are different processes of religion and purificatory processes by cultivation of knowledge, meditation in the mystic yoga system, etc., but one who surrenders unto Krsna does not have to execute so many methods.

Srila Prabhupada