Anyone can have feelings of anxiety. These may occur in response to a stressful situation. Sometimes these feelings can be helpful, for example, by increasing a person’s ability to perform in a race. These feelings are normal. Only when the symptoms are more intense or long-lasting do they interfere with a person’s concentration and ability to do routine tasks. People may avoid situations that could provoke feelings of anxiety and this interference with daily living, as much as the symptoms themselves, may lead a person to seek help.