Some thoughts and thought-streams lead to slightly lower mood – so what? A slightly lower mood isn’t the end of the world. If a line of thought leads to identification of problems, unresolved issues or as yet unrealized goals, fine – that realization may not make you jump for joy, but it’s still good to know. Going from an 8 to a 6 on the happiness scale isn’t a tragedy. Occasionally dipping down to 3 or 4 on the happiness scale doesn’t portend general unhappiness.