We all suffer from anxiety at one time or another. It is part of our psychological make up. Anxiety like all of our feelings serves an important purpose in our life. It tells us that something is amiss and we need to be cautious. It asks us think things through before we act and in general helps us to make better decisions.
Short periods of anxiety, say, when we are applying for a new job, or starting a new job, getting a new boss or making any bigger changes, are normal and healthy. However, when anxiety starts to dominate our life, especially our work-life, then this makes our life miserable.