Idealism - unrealistic belief in perfection; not seeing things as they are
The ideal man is him (idealism) in his own mind. The way he saw himself in the mirror was unrealistic.
Examples of idealism in a sentence
Steeped in idealism, her goals were impractical.
The man’s idealism stopped him from keeping a job, as he was always searching for the perfect work environment.
The inexperienced girl’s idealism lead her to be fully dedicated to a cause that was without merit or honour.