"They fall into what Ajaan Lee called delusion concentration: moha-samadhi. Things are quiet, pleasant, still, but you have no
idea where you are."
"That’s what happens in delusion concentration: You hit that nice little source of ease, you just stick yourself in it, and then you let go of everything else, including the mindfulness, including the alertness. It feels good, but you don’t really gain anything from it. It is restful to some extent, but not nearly as energizing as if you were focused on the breath, staying mindful and alert. Because we’re not here just to bliss out. We’re here to learn how to use the bliss. This is part of our path."
"There were two exceptions to Ajaan Fuang's usual practice of not identifying the state you had attained in your practice, and both involved states of wrong concentration. The first was the state that comes when the breath gets so comfortable that your focus drifts from the breath to the sense of comfort itself, your mindfulness begins to blur, and your sense of the body and your surroundings gets lost in a pleasant haze. When you emerge, you find it hard to identify where exactly you were focused. Ajaan Fuang called this moha-samadhi, or delusion-concentration.
"The second state was one I happened to hit one night when my concentration was extremely one-pointed, and so refined that it refused settle on or label even the most fleeting mental objects. I dropped into a state in which I lost all sense of the body, of any internal/external sounds, or of any thoughts or perceptions at all — although there was just enough tiny awareness to let me know, when I emerged, that I hadn't been asleep. I found that I could stay there for many hours, and yet time would pass very quickly. Two hours would seem like two minutes. I could also "program" myself to come out at a particular time."
"In both these states of wrong concentration, the limited range of awareness was what made them wrong. If whole areas of your awareness are blocked off, how can you gain all-around insight? And as I've noticed in years since, people adept at blotting out large areas of awareness through powerful one-pointedness also tend to be psychologically adept at dissociation and denial."