Right mindfulness is defined by the Buddha much more precise and profound than just "choiceless/non-reactive awareness".
Firstly, our mindfulness has to be directed to one the following four areas:
Secondly, mindfulness has to be accompanied by wisdom/understanding, right effort, and the develpment of all other factors of the Eightfold Path.
Thirdly, one has to be mindful of arising and passing away of the phenomena one is observing, discerning their impermanent and conditioned nature.
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www.tinyletter.com/dhammagiri/archive
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