I too have been diagnosed with stiff heart causing heart failure. I have AF as well and Fibromyalgia, Plantart Fasciitis in both heels. I was told by the Consultant yesterday I have a condition that they think is from birth, A thickening of the heart muscke at the sides and top of the heart. He has given me 6 months the sort myself out. Firstly I have 6 months to lose 2 stone in weight and also to do more exercise. He understands it is difficult for me with the Fibromyalgia that seems to break through in my right knee and thigh. Moving around not a pain in one okace. I cannot walk far because of the breathlessness or do any physical exercise like carrying things or bending to lift things up. I do TaiChi every week and have Traditional Chinese Medicine in the form of acupuncture.If I don't get the weight down he will no longer see me. He thinks the problem has been there from birth. Has anyone else had these same problems together? I an going to give it my best shot. I want to live life.