Four-year-olds are energetic, curious explorers with advancing physical, cognitive, language, and social skills, though they still struggle with emotional regulation and logical reasoning. At this age, children develop greater independence through self-care, elaborate pretend play, and increasing social interactions, while beginning to understand rules and fairness, albeit from a self-centered perspective. Parents can best support development by encouraging physical activity, engaging in meaningful conversations, allowing appropriate choices, and providing ample unstructured playtime for creative exploration. The key is balancing structure with flexibility while avoiding perfectionism, excessive comparisons, and over-scheduling, allowing children to develop confidence and resilience through their natural curiosity.