These are just two personality types. One type tries to focus on the outer positiveness and ignore the lack of inner contentment, while another focuses on the negative, trying to find ways to solve it, all the while being burdened by it. There is no one correct type. Everyone is different, and each opinion must be validated.
Patri, I usually wouldn’t say this, but I feel the need to if it can save a marriage: Your second sentence can many times be the driving force for a bitter and abusive relationship.