If you have been living on the edge in terms of sleep, good personal hygiene, looking after your gums and teeth with inspections and repairs every year, not gotten COVID, not seriously overweight, don't have sleep apnea, are not an angry person, and you get exercise two or three times each week at a minimum, there's not much else except strictly limit alcohol (some can drink once a day, some never, and in between), limit caffeine, be careful of antihistamines and other cold medicines, and try not to fret over the AF...you can live with it for the rest of your life with some thoughtful management and monitoring by a competent cardiologist.

It's a progressive electrical disorder; it will almost certainly evolve to persistent AF, long-standing persistent AF, and finally to permanent AF if you don't control it. In turn, you invite mitral valve prolapse, atrial wall thickening and deposition of collagen (meaning the walls get stiff and lose their ability to pump well by changing shape), and eventual cardiac insufficiency, or what is still regrettably called 'heart failure'. Controlled well, you can literally live to 120 and beyond barring other natural impediments to that lofty goal.

Whatever you do, I would strongly urge you to consult a good cardiologist, and if your AF persists and comes on despite medication, go see a top-notch electrophysiologist who will almost certainly be able to rid you of the arrythmia.