And the good news is that the treatments may already exist.
A new study has found that psychodynamic therapy is useful for treating depression, and the positive effects are longer lasting.
It might be that teaching people to reframe their thoughts about winter can help them overcome seasonal affective disorder year after year.
So you're depressed. You know this because a health profession has told you so, or because there is no mistaking the symptoms. Perhaps you've been depressed before. What now?