I Have Had Semi-bothersome Skipping, Fluttering, Hesitating, Hard Beats For

I have had semi-bothersome skipping, fluttering, hesitating, hard beats for the past 35 years. Pretty much manageable but for the last six months or so symptoms have increased in intensity. The last three years I have experienced racing on several occasions, from 8-10 hours to just a few minutes, but it always settled down. I have had some cardio workups and am currently on beta blockers (50 mg of metropolol, twice a day). I drink strong coffee about every day and am also a heavy smoker. I drink 4 or 5 beers twice a week. Beta blockers do seem to help, but wondering eliminating some of these triggers would help me more.