The best way to describe awareness is to make analogy with the mirror. 

Material body looks in the mirror and says this is who I am. Awareness operates the same, but with one difference _ awareness is sensational mirror that feels what it sees by emotional reflecting. 

Material mirror reflects eye light, but mirror of sensational-awareness feels own self by reflecting soul light, becomes what it sees, and feels how it minds, but when sensational mirror of awareness is strong to hold own emotion external world disappears and senses own light.

So-called enlightenment is own emotional sensation, and how we feel at the moment depends on what we reflect, thus power of sensational awareness is about sensing own emotion before external reality.