Stress is a normal physical response to events that make you feel threatened or upset your balance in some way. Stress can also be positive. You need a certain amount of stress to perform your best at work. Stress can cause physical, emotional, and behavioral problems which can affect your health, energy, well-being, mental alertness, and personal and professional relationships. The key to stress management is to determine the right amount of stress that will give you energy, ambition, and enthusiasm versus the wrong amount which can harm your health and well-being.