So, your doctors would not tell you 'entirely normal' if it wasn't. They take an oath to care for your health. Stress and anxiety can cause what the holter monitor showed. I would think that your anxiety may be negatively impacting you and ultimately, it will ultimately skew your total health negatively as well. So, it's really important to get a handle on the anxiety disorder. This will ultimately make the rest of your health better. Do you see a therapist or anything?