the.com/egocentrism

means The inability (or struggle) to see things from a perspective other than your own, treating your experience as the default setting for reality.

from Built from Greek 'ego' (I) plus 'centrum' (center, from the Greek 'kentron', the sharp point of a compass used to draw a circle) — literally placing the self at the fixed point everything else revolves around. The term entered psychology's vocabulary as a technical description of cognitive development, most notably through Jean Piaget's work in the early 20th century, which used it to describe children's genuine inability to distinguish their own viewpoint from others' — not as an insult, but as a developmental stage everyone starts from.