How can i best take care of atrial fibrillation?

Depends... : Treatment of af depends on the type of af, the age of the patient, the presence or absence of underlying heart disease, and patient's personal preferences (more medications vs. Procedural approach (ablation). You should discuss this with your doctor or an electrophysiologist.

That Depends: 2 strategies: rate and rhythm control. For rate control, Diltiazem is generally slightly more effective than beta blockers like metoprolol. For rhythm control, drugs work for some. Among these, amiodarone and Dofetilide are the most effective for long-term control, but each has serious concerns. Catheter ablation has a ~4% risk of major complications, but is more effective than any drug therapy.