Ключевые слова: achievement, analysis, analyzing, business, businessmen, case, comparative, comparison, competition, development, education, effective, enhancement, entrepreneur, entrepreneurial, error, evaluations, excellence, failed, failures, growth, indicators, insights, leader, learning programs, loss, lost, mistakes, money, performance, profit, representatives, revenue, review, rivalry, sales, skill, stories, strategies, studies, study, succeeded, success, successful, tactics, talent, talented, techniques, training, who,