Solipsistic

ˌsɒlɪpˈsɪstɪk

adjective

of or characterized by solipsism, or the theory that only the self exists, or can be known to exist

The word 'solipsistic' is derived from the Latin word 'solus' meaning 'alone' and 'ipse' meaning 'self'. It describes someone who views everything around them as existing only in their own mind. It is a philosophical term often used to describe extreme self-centeredness or a lack of empathy towards others.

Up in Kashmir, Narada-Markandaya was falling into the solipsistic dreams of the true narcissist, concerned only with the erotic pleasures of constant sexual alterations; while Soumitra the time-traveler, wounded by our refusal to listen to his descriptions of a future in which (he said) the country would be governed by a urine-drinking dotard who refused to die, and people would forget everything they had ever learned, and Pakistan would split like an amoeba, and the prime ministers of each half would be assassinated by their successors, both of whom—he swore despite our disbelief—would be called by the same name … wounded Soumitra became a regular absentee from our nightly meetings, disappearing for long periods into the spidery labyrinths of Time.

Salman Rushdie

Midnight's Children: A Novel