You can fix social phobia by participating in CBT (cognitive behavioral therapy). The following video explains how social phobia develops, and how you can fix it:
You can also fix social phobia by taking prescription medications.
If you want a natural and self-help approach to fixing social phobia, then you can consider taking KalmPro, a natural anxiety supplement, and also obtaining Anxiety Protocol, a self-help book for anxiety. Please watch the following videos on KalmPro and Anxiety Protocol: