In the real world there are some circunstance can cause a stress in our life. We need to pay attention on situacion we are living. It could be on a personal life, as a trafic situation, we may want to change the root to go to work or live to work earlier. Some little change, make a diference of a cause of stress. Also a cause of stress could be professional. As a instructor is necessary pay attention on the situation we have and from there take an action to prevent a stress.