Premanand Maharaj Ji
How do I atone for sins I committed knowingly or unknowingly?
Atone early, before sin grows
A small sin grows like interest on interest, so fear sin and keep your mind in check. If it has happened, atone through Name chanting, Bhagwat recitation or a mantra rite at a pilgrimage place, while it is still small.
If it has happened knowingly or unknowingly, one should do atonement for it, such as chanting Bhagwan's Name.