Ключевые слова: background, black, care, chaos, concept, crisis, dark, depression, doldrums, emotion, feeling, flat, frustration, grey, health, heaviness, help, lay, life, low, many, medical, melancholy, mental, mood, negative, object, pain, papers, problem, psychological, psychology, recovery, sad, signs, sorrow, state, stress, suffer, support, symptoms, table, therapy, top, torn, treatment, unhappy, view, words,