Ключевые слова: achievement, attitude, bad, balance, behaviour, belief, business, challenge, change, choice, choose, comparison, concept, conceptual, confident, decision, design, direction, education, goal, good, growth, idea, impossible, isolated, leadership, letter, life, management, mind, motivation, negative, negativity, opposite, optimism, optimistic, person, personal, positive, positivity, problem, sign, success, symbol, text, think, thinking, thought, word,