Avoidant (or anxious) personality disorder
You may:
avoid work or social activities that mean you must be with others
expect disapproval and criticism and be very sensitive to it
worry constantly about being 'found out' and rejected
worry about being ridiculed or shamed by others
avoid relationships, friendships and intimacy because you fear rejection
feel lonely and isolated, and inferior to others
be reluctant to try new activities in case you embarrass yourself.