It is normal to feel some worry and concern about general or specific things in your life. However, when these worries and fears become part of your daily life, and they affect your emotional well-being; then, you could be suffering from an Anxiety Disorder.
There are different kinds of anxiety disorders. For example:
Social Anxiety/Social Phobia:
Intense fear in and of social interactions is managed by avoiding the event or situation.
Generalised Anxiety: It is ongoing anxiety that is not specific to any situation or object. The person lives in a continuing fear of something that they are not aware of.
An intense and sudden feeling of terror, generally followed by trembling, sweaty hands, and fast heart palpitations.
A conscious, specific fear of an object or situation (e.g. an animal, a storm, a particular place).
In therapy, the idea is to find out why you have these symptoms because they are expressing an emotional conflict that you are not aware of. There is not something wrong with you if you feel that way. As you are exploring yourself and gaining more insights and a deeper understanding of your symptoms, you will feel more in control of them, rather than them on you.