Hello, After getting AF in Feb I have just had a cardio version today and it worked on the first shock. My heart capacity has now gone from 35% to 50 to 55% ( my GP said that it would not improve from 35%). How do I protect text myself to try to stop my heart going back into AF? my job is very stressful and this has been ignored my senior managers for three years so I do not want to go back there but my doctor will not sign me off anymore. I do feel that it is a major cause for my situation as apart from breathlessness I had not symptoms. I would like to thank everyone for their support and I have learnt a lot about AF from this forum.