Working memory is a cognitive system that temporarily holds and manipulates information we need for tasks at hand. It allows us to remember a phone number long enough to dial it or keep track of multiple steps while cooking a recipe. This mental workspace is essential for problem-solving and decision-making in our daily lives. The capacity of working memory is limited, typically holding about 7 items at once, as suggested by psychologist George A. Miller. Factors like stress and distractions can affect its efficiency. Strengthening working memory can improve learning and overall cognitive function, benefiting activities like studying or playing games that require focus.