"..But since we have a body it is indispensable that we exist also as an animal, and each time we invent a new increase of consciousness we have to put a new link in the chain that binds us to the animal, till finally it will become so long that complications will surely ensue." CG Jung

Stress is the wear and tear experienced as individuals adapt to a continually changing environment. Stress can be both positive and negative; as a positive influence, stress forces people into action and can boost energy and production, however as a negative influence, stress can lead to adverse physical symptoms and be detrimental to good health. Stress is caused by the body's innate reaction to defend itself, thus in an emergency stress will force us to exert maximum effort to protect ourselves. However when negative stress occurs, it's as if the body is prepared to face an emergency but no emergency happens; all the extra energy has nowhere to go, and the body is working overtime which leads to feelings of anxiety and worry. Negative stress can also lead to feelings of anger, distrust, depression and rejection, which may ultimately lead to headaches, insomnia, high blood pressure, an upset stomach and heart disease. 

Stressors at both work and in personal lives may lead to stress, and each individual will cope differently with these levels of stress. What is extremely stressful to one individual may be thrilling to another. Different occupations will also have higher stress levels than others, and stress is recognised to be one of the main causes of sick absence from work. Problems occur when individuals perceive themselves as unable to cope with the level of stress they face, and feel they are not capable to combat their stress. Changes in personal lives, such as the death of a loved one, a job promotion, a new relationship or the birth of a child will also cause stress as adjustments in our lives are needed to be able to cope. In these cases, stress may either hinder or help changes depending on how the individual reacts.

Thus the aim should never be to eliminate stress, but to learn how to manage it and how it can be used to help us. Stress can cause problems or make problems worse if ways of coping with it are not found.