Some anxiety is NORMAL. You have been away from it for a long time, you doubt your abilities. It will all come back. A certain amount of anxiety can be healthy and keep you focused and on your toes. But if you go to medical person such as a psychiatrist, their first course of action is to prescribe some medication and you'll really screw up your medical renewal. Sorry If I offend any psychiatrists who might read this, but I speak from experience with close friends. A lot of these medications are VERY hard to come off from too. Not to mention the $150+ every couple of weeks to get your prescriptions renewed, which you'd be better off spending on flying, with a friend if necessary. Just get back into the environment.
After my first solo, I didn't really believe I could really do this. So every flight I took off and went around the pattern just once, landed and told myself; there you can do it - now go off and practice something else.