It is related to what is called "no-mind" in Hinduism/Yoga/Buddhism. Also see "Mushin" - https://en.wikipedia.org/wiki/Mushin_(mental_state) https://en.wikipedi

It is related to what is called "no-mind" in Hinduism/Yoga/Buddhism. Also see "Mushin" - https://en.wikipedia.org/wiki/Mushin_(mental_state) https://en.wikipedia.org/wiki/Mushin_(mental_state) The idea is that when something "takes" your mind you just focus on it to the exclusion of everything else i.e. no judgements, past, future etc. When your mind "moves" to the next thing it drops everything (with no residue) and gets "fully filled" with the new thing. This happens instant to instant leading to a state of "enjoyable peacefulness".