Our moods and mental states are real only as long as we attend to them. So it is not good to dwell on them, let alone getting caught up in their analysis. Sometimes it is better to simply ignore them instead of looking into them seeking a cause or solution. It is the nature of our consciousness to become identified with the state toward which it looks.
The more we zoom in on a state the more it stands out, and there is no limit to its complexity. In fact zooming in on a state, which begins by first entertaining its idea, brings that state into existence, from potentiality into actuality. So, the quality of our lives depends only on our overall orientation toward reality and not what we do with it. All we need to do is turn the gaze of consciousness toward the state of bliss, or hell if you please; this is very similar to the way we can bring the eye focus on an object by simply turning away from everything else and withdrawing our attention from them. This is easily achieved by continuous practice in which we have to keep bringing our focus back on a desirable state.
Of course in the beginning the mind tends to scatter and steal away our focus but practice makes it easier and finally attainable where we become identified with that state and it becomes a permanent station for us. This is really the simplest thing in the world because it requires no action at all and is accessible at all times and regardless of outward circumstances. We should see that there exists nothing but the mind and that the mind is nothing but emptiness.