I have permanent atrial Fib - 24/7, ever since an aortic valve replacement when I was 49 (I'm now 77) and I'm doing just fine. I take a few meds; to slow down the heart rate a bit; for my blood pressure; and of course Warfarin. I've had an ablation some 20 years ago which didn't work. Sometimes the fear and anxiety about a problem is worse than the actual problem!