Idioms can be a powerful linguistic tool only when they are used in the right way in the right places.
see the world through rose-colored glasses
to see only the good things about something, to be too optimistic
She is unrealistic and always sees the world through rose-colored glasses.
List of common idioms, their meanings and examples of their usage in sentences
A group of words which have a different meaning when used together from the one they would have if you took the meaning of each word separately.