Eating a diet high in fruits and vegetables can significantly increase productivity, well-being, happiness, and reduce stress. A mismanaged diet can lead to issues such as fatigue, irritability, brain fog, and decreased willpower, making it harder to focus and be productive. To optimize this for maximum productivity, one should stick to foods with a low glycemic index, which release energy slowly and prevent spikes in blood sugar levels. This includes opting for meats, eggs, and vegetables instead of carb-heavy meals like bagels, pancakes, and sandwiches. Additionally, avoiding sugary drinks, artificial sweeteners, and late-night snacking can also help improve productivity. By making these changes, one can experience a significant increase in energy, focus, and overall well-being.