I 've had Afib (paroxysmal) for past 2 years. On blood thinner, beta blocker and heart aspirin. At last visit, cardiologist discussed increasing beta blocker slightly but explained it could reduce resting heart rate too much, so it was a bit of balancing act.
Once I realised that being in Afib wasn't going to cause a heart attack, but main risk was stroke, which blood thinners prevent(hopefully), I don't panic when I get an episode.
I know when I'm in Afib, and confirm by taking pulse. I also have a gadget which connects with phone and does mini-Ecg. My episodes mostly happen at night, sometimes when I've just dropped off to sleep. An annoying side effect is a need to pee about every 20 minutes which makes it difficult to go back to sleep!
My episodes last a few hours- longest has been about 8 hours, but I've never felt the need to go to hospital as up to now they've stopped on their own.