Recently someone I know died without warning. He was young, healthy, and had no known underlying health conditions. He just died in his sleep for seemingly no reason. I’ve always had anxiety over death but now I’m terrified knowing that it could come at any moment and I may not even know it. I’m also super paranoid about every single ache or pain that I have, and that it might be indicative of some serious problem, and when I find out it will be too late. I also have a panic disorder that makes it all that much worse. I’m young and I don’t have any physical problems that I know of, but so was he. Any advice on how to deal with this would be very much appreciated.