Procrastination is the deferment or avoidance of an action or task to a later time. For the person procrastinating this may result in stress, a sense of guilt, the loss of productivity, the creation of crisis, and the chagrin of others for not fulfilling one's responsibilities or commitments. While it is normal for individuals to procrastinate to some degree, it becomes a problem when it impedes normal functioning. Chronic procrastination may be a sign of an underlying psychological or physiological disorder.
In other words, I have an exam tomorrow.