Boost your brainpower with a set of four books designed to enhance your thinking skills. Written by cognitive psychology expert William Henderson, these books cover critical thinking, decision-making, logical reasoning, and creative thinking. Learn practical techniques to improve your decision-making, overcome biases and fallacies, and unleash your creative potential. With evidence-based strategies and easy-to-follow advice, these books offer a roadmap for personal and professional growth. $0.99 on Kindle.