self-deception

self-deceptionnoun
Translations
His optimism was based more on self-deception than on evidence.
Его оптимизм основывался скорее на самообмане, чем на фактах.
Additional translations
самообольщениекнижн.; реже, с оттенком заблуждения о себе или о положении дел
Definitions
the act or habit of deceiving oneself, especially by refusing to accept unpleasant facts or reality
His optimism was based more on self-deception than on evidence.