There is a course of experience through which every being must pass to realise God.
Suppose an ordinary person, who has no thought of God or desire for real bliss, gives something to charity out of his philanthropic nature and feelings for the poor. This is a good deed, and due to that and his mercy for those suffering, he is helped inwardly and progresses.
His kind and generous mentality enables him to progress further and further, until a time comes when the desire for real bliss is created. The desire for bliss is born in him automatically. This desire leads him to a Sadguru, and by thus reaching the original source of everything, he is eventually able to attain bliss. But before achieving this state of being able to create a desire for real bliss, he has to pass through a succession of experiences, both good and bad