Thanks for your question on Health Care Magic. I can understand your concern. Since your Holter monitoring (48 hour continuous monitoring of ecg) is normal, no need to worry for arrhythmia or heart related diseases. Your symptoms are mostly due to uncontrolled anxiety. So better to consult psychiatrist and get done counselling sessions. Try to identify stressor in your life and start working on its solution. You may need additional anxiolytic drug along with beta blocker. Counselling plays very important role in management anxiety. Don t worry, you will be alright. Avoid stress and tension, be relax and calm. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.