...excerpted from the complete guide to your emotions and your health

How does stress damage the body?  The prevailing theory, developed by Dr. Hans Selye, is that stress hurts you by sounding the alarm to mobilize for fight or flight.  When you feel you're in danger, your heart rate speeds up; the fats, cholesterol, and sugar in your bloodstream increase, your stomach secretes more acid, your immune system slows down.  All of these changes are a colossal strain.  And the strain is greatest if the stresses you face are numerous, severe, and persistent.  Three major personality traits seemed most likely to avoid stress:  1.  Commitment to self, work, family, and other important values; 2.  A sense of personal control over one's life; and 3.  The ability to see change in one's life as a challenge to master.  Three techniques which help to assure  happiness, health and hardiness are:  Focusing, reconstructing stressful situations and compensating through self-improvement.