You need a hobby to get your mind off your heart.
I can absolutely, positively, 100% guarantee you guys that you are going to die. There is no doubt about it. Just not right away. Pretty safe bet. But yes, you will die, so prepare for it. Have a nice life, maybe get married and have your own families, get as good an education as you can, do meaningful work, help as many people as you can along the way in life, and leave the world a better place. That's how you prepare to die. So do that, and that will be the best way to cope with your fear of dying.
Lol I do that time to time I hate it. I hate that I don't have my life now I'm getting an angio and scared about that I do think ACH is right help is the best thing for people like us.
Based on my own experience, I would suggest that you see a counselor or better yet, a psychiatrist (because these people actually go to medical school and know the body), someone who treats health anxieties.
Rationally, you know that your risk of heart disease is about zero. Irrationally--well, that is something many of us need help with.
The hardest part of getting help is making that first phone call with a shrink. After that, believe me, it gets easier MUCH faster. You will get your life back again, and once more enjoy the kinds of things we were meant to enjoy, rather than sitting around with our fingers on our pulse.