Afib & PVC's

Have been experiencing heart flutters, jumping, hesitating, pulsating, flopping, twitching, thumping, quivering sensations (you name it, I've felt it), for 40 years. Have lived with it since being told 35 years ago that's what I had to do. Over this period I had a couple of instances where my heart would start racing but only for a few seconds. Well, four years ago I was sitting at my desk at work one night and the racing kicked in, but this time it lasted for 14 hours. Since then, the AFIB incidents slowly got more frequent and so did all the flutters, jumping, hesitating, etc. to the point they were more alarming. I do have a cardiologist that I've been seeing for about 3 years now. Put me on metropolol tartrate then switched to metropolol succinate, anywhere from 50-100 milligrams a day. Don't know if it has really helped or not. Also taking Vitamin C, D, Magnesium and baby aspirin. Have been prescribed blood thinners the last couple of years as well as dilitizem but have been afraid to take any of it. When in AFIB, my heart beats very hard at between 175-200 beats a minute. Have had several holter meters, echocardiograms, stress test over the last few years but everything appears to be normal. The holter meters did record hundreds of skips and other bothersome beating each day, and one time recorded 8,000 over a two-day period. On two occasions since April, 2017, I went into AFIB for several hours then, of course it always stops on its own. But, these two times it remained with me like aftershocks going in and out of AFIB numerous times over a two or three day period after the initial AFIB incident. Heart will feel very strange going in and out of these numerous incidents and makes me a little light headed. Feels like the heart is just rumbling around not knowing what to do. Very scary. Ablation has been talked about in the past and when I am at my worst I really start considering it. I do try and get through this all over the years by pushing myself and deciding I'm just going to live my life the best I can. I am still a smoker, drink black coffee and drink beer maybe 3 or 4 a week. Been told however to cut down on all of it. But I am stubborn. Any suggestions or comments would be welcome.