Stress is the "wear and tear" or what body experience as we adjust to our continually changing environment, it has physical & emotional effect and can create positive or negative feelings. As a positive influence stress can help compel us to action; it can result in new awareness and exciting new perspective. As a negative influence it can result in a feeling of distrust, rejection, anger and depression, which in turn can lead to health problem such as headaches, stomach upset, high blood pressure, ulcers, heart diseases and stroke. More typically stress is associated with constraints and demands the former preventing from doing what you desire. The later refers to the loss of something desired .A good performance review may lead to a promotion, greater responsibilities and a higher salary.