We often forget that anxiety is an emotion. Yes, an emotion. The same as sadness, joy, anger or surprise. And emotions are necessary for us. In fact, we need them! We use emotions to express our attitude to the world, and we don't even have to use a single word to do so. By becoming aware of our own emotions, we can identify what our attitude to a stimulus is. Because we are not always 100% clear about this. Why do we need to feel anxiety then? After all, it is a negative state. When can we speak of an anxiety disorder? To treat, not to treat? When to start worrying?