Idiom
see the glass half fullsee the glass (as) half full
to believe that a situation is more good than bad.I'm an optimist — I see the glass as half full and think we'll come through this difficult time OK.
Usage notes: also used in the form the glass is half full - the situation is seen as good or hopeful:
To some people, the glass is always half full.
Related vocabulary: half a loaf