It is the underlying power that causes experiencing. You are looking at something but your attention is involved in listening to someone, in this example even if seeing is happening but it’s not been registered in mind as an experience because of lack of attention. So effectively you will only listen because you are absent from looking. So attention is synonyms to myself, the self that we are generally aware of. You are present where your attention is.
How does it affect our life?
Generally our life is nothing but collection of experiences, until we know the experiencer, our true self. Any experience touched by your attention, is added to the pool of your experiences. So effectively your life is created by the movements of attention and it would be very significant to have some understanding of the power of attention.
So, is it possible to control my attention?
Attention is triggered by our interests. Our attention goes to the objects/experiences that we are interested in. And by purifying your interests or desires you can effectively control your attention. Desires can be purified by exposing them under the light of your introspection. When a desire is exposed, the non-essential part of it falls away and only essential desire remains. So if you want to control attention, go deep into your desires.
True power of attention
The power of attention is not limited to experiencing the objective reality. By objective reality I mean anything that can be experienced. The true power of attention lies in moving towards the source of attention, that is it’s real power. When the attention moves out from the source, experiences happen. But when attention comes to the source of attention, then recognition happens, recognition of truth, recognition of our true self.