Ключевые слова: alone, business, businessman, businessperson, busy, company, concentration, dark, deadline, depressed, desk, determination, document, effort, employee, entrepreneur, executive, exhausted, expertise, fatigue, finance, financial, frustration, hours, laptop, late, management, manager, meeting, night, office, overtime, overworked, paperwork, problem, professional, project, report, research, schedule, serious, sleepy, startup, stressed, time, tired, urgency, working, workplace, worried,