Ключевые слова: attitude, backlit, bad, business, challenge, cognitive, concept, contradictory, crisis, cup, dilemma, empty, fail, failure, fingers, full, glass, good, half, hand, impossible, learn, learning, left, metaphor, mind, mindset, motivation, negative, object, opinion, opportunity, opposite, optimism, optimist, pessimism, pessimist, positive, positive thinking, positivity, possible, problem, silhouette, solution, success, versus, water,