Macbeth- "What hands are here! Ha! They pluck out mine eyes. Will all great Neptune’s ocean wash this blood. Clean from my hand? No, this my hand will rather The multitudinous seas incarnadine, Making the green one red." (Act 2, Scene 2) This signifies Macbeth's immense guilt and his belief that he won't be able to get the blood off his hands, causing him to experience great remorse and fear, which eventually drives him on a murderous path.
Here’s why responding to our friends’ problems with positive thinking or self-help advice isn’t enough.