SAD is not an emotion. It is Seasonal Affective Disorder (SAD). SAD is the colloquial term for an official diagnosis of Major Depressive Disorder with a Seasonal Pattern.
One of the best things you can to manage your anxiety is to focus on your breathing. There are good reasons that breathing techniques help with anxiety.
It is not unusual, at times, to feel uncomfortable or self-conscious in social settings. There are some people who are naturally shy and reserved. Social anxiety goes beyond both of these.
For the sake of understanding it better, you can talk about two types of trauma: Big T trauma and little t trauma. The main difference between big T and little t trauma is the event that is the source of the trauma.
