Ключевые слова: achievement, attitude, background, black, blackboard, board, business, career, chalk, challenge, challenges, chance, change, concept, conceptual, confidence, corporate, development, education, goal, hand, hope, idea, impossible, incentive, innovation, inspiration, motivation, motivational, new, opportunity, paper, people, philosophy, positive, positivity, possibility, possible, problem, progress, sign, solution, success, text, vision, wall, white, word,