This 4-book set titled "Dopamine Detox, Immediate Action, Powerful Focus, Strategic Mindset" by Thibaut Meurisse is a must-have for anyone looking to improve their productivity and mindset. With a focus on dopamine detoxing, the books provide powerful insights and strategies to help you achieve a more strategic and focused mindset. Whether you're looking to improve your work performance or simply want to live a more fulfilling life, this set is the perfect guide. The books are written in English and fall under the category of self-help. Get ready to take immediate action and achieve your goals with this powerful set.