It is the mind that frees us or enslaves.
Driven by the senses we become bound;
Master of the senses we become free.
Those who seek freedom must master their senses.

When the mind is detached from the senses
One reaches the summit of consciousness.
Mastery of the mind leads to wisdom.
Practice meditation.  Stop all vain talk.
The highest state is beyond reach of thought,
For it lies beyond all duality.

Most of us let our mind control us.   Beliefs, opinions and what the psychologists call filters determine not only how we react to what we see and hear, but limit what we can see and hear.  Our eyes see everything, of course, but our subconscious filters it like a news editor deciding what stories to print, and which to ignore.  If we are to become free and develop our spiritual side, we must take control of our mind, discover what out filters are, and eliminate false filters that are only blocking out truth.