Every time i get a fever blister i worry that it will go to eye ears or brain my anxiety is up over this and now have a bad headache?

Specific Anxiety : First, how often are you getting these "fever blisters"? You might want to consult a dermatologist for treatment options. More importantly, you mention that you have an anxiety disorder, and you have tried behavior therapy. Your anxiety sounds like a specific phobia - try another behavioral specialist. I would recommend an experienced psychologist. Anti-anxiety medication also could help.