What kinds of troubles can people divide into?
Career, family, dream, desire, morality, physiology, psychology, ethics, theory, facts, stocks, diving, collusion, bear market, depreciation, appreciation, bankruptcy, law, knowledge, job search, occupation, position, thesis, insomnia, dreaminess, depression, disease, accident, mathematics, physics, chemistry. Choice, pet, myopia, virus, communication, trust, nightmare, bad news, bad luck, fate, perception, cognition, understanding, ball art, seeking medical treatment, cooking, selling, selling, purchasing, transportation, contact, guilt, confusion, survival, thirst quenching, inspection, smoking cessation, abstinence, makeup, clothing, jewelry.