You might feel insecure in social situations, such as worrying people are judging you, or that you are boring, or that you don't measure up to your peers in terms of physical attributes or accomplishments at work or in general. You may also be feeling lonely or having problems making friends or finding an intimate relationship due to avoidance of social situations.
Cognitive Behaviour Therapy has been demonstrated to be effective in dealing with negative beliefs about oneself such as feeling socially undesirable or vulnerable, or that other's are very judgemental in social situations. A combination of challenging the negative thinking biases related to social anxiety in combination with exercises to help stop the cycle of avoidance so common in social anxiety helps people stop the isolation and loneliness. It helps them feel relaxed and calm with unfamiliar people as well as connect and make better friendships.