Definitely successful. I take dofetilide, diltiazem, and warfarin to help control my afib - since 2015. I'm 85 - making it risky to have an ablation. I have found that over exertion definitely can bring on an afib attack and avoiding that happening can keep attacks away. Like many, I also avoid alcohol and caffeine and smoking. Good luck to you and finding what you need to do or not do to keep the attacks away.