Ключевые слова: achievement, aging, anxiety, anxious, business, career, challenge, climbing, crisis, depressed, depression, despair, disappointment, fail, failure, goal, growth, health, helplessness, inevitable mortality, insecure, life, loneliness, middle age, middle aged, middle life crisis, middleaged, midlife, midlife crisis, miserable, negative, panic, peak, psychological crisis, psychology, remorse, sad, sorrow, stress, thoughts, trouble, unstable, unsuccessful, victory, worry,