Oh when I homeschooled my anxious kid part of his homeschooling was learning how to deal with anxiety. Relaxation techniques, supporting him when anxious but making him take baby steps to overcome fear. There are great books out there...what to do when you worry too much, the relaxation workbook, the anxiety workbook ( the last two are for adults but you can get some good information for yourself out of there to help him)

http://www.amazon.com/What-When-You-Worry-Much/dp/1591473144

http://www.amazon.com/Anxiety-Phobi...+anxiety+and+phobia+workbook+6th+edition

http://www.amazon.com/Relaxation-Re...+anxiety+and+phobia+workbook+6th+edition

The big thing was getting him out of the fight or flight mode 24/7. No one can keep that up and then slowly stretching his wings.

We tried therapy but the therapist didn't get it. He just worried about earning the rewards and transferred mega anxiety to the whole reward system. Maybe good therapy would help.