“On average most people can only hold seven ‘items’ of information in their working memory at one time.”
Our working memory is basically the information we hold in our brain as we actively use it. It’s limited, powerful, a key to our ability to focus, and it can be improved.
Business Insider explains how working memory operates and suggests three ways to improve your working memory, including to reduce stress in your life, increase high-intensity exercise, and increase practice of a specific skill such as playing an instrument.