Mindfulness holds a boundary so that we don’t get overwhelmed, shut down or react to the feelings that we have; then with full awareness, we get the whole of it, how that impression arises and what it does. We may then understand: ‘this feeling or impression is based upon this perception and thought, and it subsides when that thought or perception is removed.’ ‘This negative impression arises with that perception or that memory and it subsides when I practise loving-kindness, or even when I can just sit with it and let it subside.’ Together mindfulness and full awareness acknowledge what is going on, and where it stops. They don’t bring ‘I am,’ ‘I should be’ into it.
If we establish these skills of attention, they free the mind from acting on or reacting to the results of the past. If we attend to the present impressions, the present moods and sensations, and cut off the proliferations and projections, we’re not living in the fog of resentment, fantasy, romance, or other biases. This means that our attention, and consequently, our moods, actions and speech, are going to be clearer and brighter
Ajahn Sucitto, Bright Kamma: Support for Attention