Everyone worries and feels nervous every now and then. In fact, it is perfectly healthy to feel worried and nervous. You might even notice that it can be an advantage for you to feel worried and nervous. It could motivate you to study, it will protect you from getting hit by a car when walking across the street or even help you remember your next doctor’s appointment. Anxiety is when the worry, panicky, frightened and nervous feelings get too overwhelming. These feelings can take control of your life and prevent you from doing all the things that you want to do.