Is it truly possible to capture an emotion in words? Such indescribable feelings as love, loss, or anger? Sure, you can write and make the reader understand what the character is feeling, but making them feel it themselves is an entirely different story.
So, you have to balance cliches and new metaphors, because nobody likes too many unimaginative cliches, and yet using metaphors that are completely unheard of can leave the reader confused or unimpressed.
A good story has coherent feeling in it. A great story actually makes you feel.