Stress is medically defined as a feeling of emotional or physical tension. It comes from frustration, anger, or a feeling of nervousness. Not a lot of people will describe themselves as in this category, but If you consider that a lot of us are working hard, working late, juggling deadlines, missing deadlines, and pushing off workload, then we can not be so free from stress. Work can blind us to stress, especially valuable work, even fulfilling work.