there are other less invasive approaches other direct neurosurgery. You can do CBT with Vagus nerve stimulation therapy, available at most of tertiary care centers and psychiatrist. results are good and its non invasive. there are complications of surgery and no definite results even in hands of finest surgeon.
Next Steps
try increasing your medication with proper guidance. 5 years of anxiety is there but it can be controlled with proper medication, to be very frank.
Health Tips
try combined therapy of neurology and psychiatry.