All these disciplines are for the purification of the heart. And as soon as it is pure, all truths flash upon it in a minute; all truth in the universe will manifest in your heart, if you are sufficiently pure.
What is the next step, the practical application? —I will answer that the absolutely vital thing is to consolidate your understanding, to become capable of enjoyment, of living in the present, and of the discipline which this involves. Without this you have nothing to give.
Well, let's distinguish religion from spirituality. I am Catholic, so religion for me is a way of having discipline and collective worship with persons who share the same mystery.
Discipline does not mean suppression and control, nor is it adjustment to a pattern or ideology. It means a mind that sees 'what is' and learns from 'what was'.