Surrender

The greatest obstacle of the mind is its own power.
Till there is not a true surrender of all its powers, methods and nature there will be not any sparkling of Light. But the mind is unwilling to surrender its power.
Certainly it has seen some light, but it has confused it for the brilliance of the Greater Light.
But, as it seems, none can enter that sacred space of understanding without the commitment of the Heart.
 Mind alone cannot hold onto itself the whole understanding of Life, there is the need of a conjunction of Mind and Heart.
And this sacred conjunction cannot happen if the Mind has not reformed its nature, approaching its sacred core.
Mind alone cannot even understand this sense of Sacredness.
To enter the Inner Temple Mind needs to bear evidence of the Signals of the Sacrifice. It has to became simple and malleable, a fluid instrument and not a rock opposing to the current.
Renounce intelligence for Divine Intelligence.
Artificiality for spontaneity.
This is the sense of progressive growth into Yoga.
The mere operational and instrumental knowledge of this process of Integration into Life, is itself the obstacle if it is not supported by the  factual realization.
That is the difference between believing or instrumental knowledge and true realization.