Getting a girl to want to talk to you may sound like a challenging task, especially if you're shy or have low self-esteem. Maybe your previous attempts failed because you were not assertive enough. Or perhaps you simply don't know how to flirt effectively.

The medical definition of anxiety, as noted by psychiatrist Neel Burton, writing for Psychology Today, is "anxiety is a state consisting of psychological and physical symptoms that are brought about by a sense of apprehension at a perceived threat."