A few thoughts on drishti
Through asana we work our way from the surface to our deep core and conversely from the core of our being to the periphery. Yoga is the outward journey and the inner journey.
In one text (The Yoga Sutra) it begins with the end (Samadhi) in mind. Through hatha (the physical practice) we begin to access the mind. If we can learn to master the mind, we are practicing yoga, we are bringing union.
Yoga chitta vritthi nirodaha. When the mind and body are no longer a distraction, you can see Yourself 
clearly.