Happiness comes and goes.
It's a reminder that one person's moods affect the entire household, but indirectly it points to a larger problem. The truth is, Mama never can stay completely happy, and neither can Daddy. In short, ain't nobody happy for long. I know some people who seem to be perpetually cheerful, and others who have learned to take joy in even the small pleasures of life. Happiness is something most people pursue, and it's a big element in bringing couples together.