Trust

One key reason people end up increasing their anxiety is trust.  When your trust gets broken, your anxiety increases.  Any situation that is comparable to the trust issue increases the amount of anxiety you feel.  Anxiety in a way becomes a protector if you accept it an not fight it.  Think about the concept of accepting your anxiety almost as if you were going to sit down with it and have a cup of tea.  Invite it in, instead of push it away and see if it helps keep your feelings in control.