Awareness
"Awareness is a capacity that we are all intimately familiar with and yet are simultaneously complete strangers to. So the training in mindfulness that we will be exploring together is really the cultivation of a resource that is already ours. It doesn't require going anywhere, it doesn't require getting anything, but it does require learning how to inhabit another domain of mind that we are, as a rule, fairly out of touch with. And that is what you might call the being mode of mind."
Jon Kabat-Zinn. "Mindfulness for Beginners. Reclaiming the Present Moment - and Your Life." Sounds True, 2012.