see only the good things about something, be too optimistic He always looks at the world through rose-colored glasses and is never able to understand that some people are dishonest.
LOOK AT (SEE) THE WORLD THROUGH ROSE-COLORED GLASSES
Meaning of LOOK AT (SEE) THE WORLD THROUGH ROSE-COLORED GLASSES in English
English idioms vocab. Словарь английских идиом и выражений. 2012