What exactly is flow? Imagine for a moment that you are running a race. Your attention is focused on the movements of your body, the power of your muscles, the force of your lungs, and the feel of the street beneath your feet. You are living in the moment, utterly absorbed in the present activity. Time seems to fall away. You are tired, but you barely notice.
According to positive psychologist Mihály Csíkszentmihályi, what you are experiencing in that moment is known as flow, a state of complete immersion in an activity.