A friend went on a mindfulness retreat once where the exercise was to fully experience a thing that you were eating. The instructor gave everyone a segment of a tangerine to savor. My friend told me that later he tried the same practice at home, and he discovered that it was impossible to savor an Oreo.
I read a similar story about an exercise to stop overeating, where people were told to completely savor one Hershey's kiss. It's not that it was impossible to savor it, but it had never occurred to them to do so. They'd eaten hundreds of chocolates and 100% of the time they had gobbled them down.
I think we're talking about two distinct mental states, one where you're holding tension between what you're doing and something else, and one where what you're doing is self-justifying. And these two states come into clearer focus with that eating exercise.
Coming back around to "enlightenment", that concept, in western spirituality, is framed as an achievement, something you strive for. Paradoxically, the mental state people are seeking is already inside them, but they can only see it by not striving. That idea is thousands of years old, and we're no better at putting it into practice.