You might contract with a therapist for a few sessions to learn techniques to manage your anxiety.
Your heart IS healthy. How do I, someone who doesn't know squat about you, know? Because the EP wouldn't have you on a waiting list if it were not. If you have valvular problems, cardiomyopathy, pericarditis, serious hypertrophy of the atrium or ventricles, you would not be an appropriate patient for ablation. So, your EP has all the information he/she needs to make an informed decision, or else that person could be sued for malpractice...operating on a patient for whom the procedure could be dangerous due to a known and existing medical condition. You've had an echocardiogram, maybe and angiogram, a stress test, and maybe even an MRI, and they all show no obvious structural defects, no enlargement (hypertrophy) beyond normal for your age and time with an arrhythmia, and you have no other serious comorbidities that will seriously erode his (and your) chances of a successful ablation.
When I was in line for an ablation, and after all the reading I had done, I couldn't wait. I literally felt like the midway was coming, I was still a kid, and I had enough money to go on every ride....three times. Plus a corndog. I was that excited. You need to place yourself in that frame of mind.