Mindfulness involves or requires, or at least generally results in, a certain reverence for life that carries with it an emotional intensity that can only be described as spiritual. Now, I am not talking about anything supposedly ‘supernatural’, whatever that word means. (I ask you, how could there be higher or lower levels of reality? As the Scottish-Australian philosopher John Anderson used to say, any talk of such things is simply ‘unspeakable.’) I am talking about an experience that transcends the intellect, the emotions, and the will---indeed, it is other than those three things, although the feelings, as well as elements of cognition, are involved. This experience is transformative, as you come to see all things of life differently. All things become new and fresh as if you were seeing them for the very first time. ‘Behold, I make all things new’ (Rev 21:5). Suddenly, and increasingly so over time, the so-called ordinary things of life seem ‘extraordinary.’ No, they remain ordinary, but you see them in a new light---the light of mindfulness. You have undergone a psychological mutation.
Note. Here's a link to a short paper I've written on Christian mysticism.
LET NOTHING DISTURB YOU