A man bound by the hands and feet cannot free himself. He must be helped by a person who is unbound because the bound cannot help the bound, the rescuer must be liberated. Therefore, only Lord Krishna or His bona fide representative can release the conditioned soul.
If one practices eating prasada, even if there is some little sinful activity involved, one becomes free from the results of sinful acts.
Srimad Bhagavatam 10.10.9,
Srila Prabhupada
Always engage in devotional service with determination.
Perfection of human life is attained when one can understand that he is not the product of matter but is in fact spirit.
Srimad Bhagavatam 1.2.20,
Srila Prabhupada