I am 21 years old and I started facing a problem. I am very sensitive to any little weird feeling in my body too. Like any little weird muscle movement, heartbeat, or other feeling freaks me out. And I also learned that this only happens when I focus on it. It get's worse when I think about it. When I'm with friends or family I'll forget about it and I" ll be fine. But when I'm alone that's when I get all paranoid. I can't even sleep because I feel like I could have a heart attack in the middle of the night and nobody would be able to help me. I live alone in an apartment and I think the solitude gets to me. I think a lot, way too much for my own good. I'm scared that I may be causing my body health problems because brain is a very powerful thing and if you think very hard about something it happens. Recently I went on a trip with my friends. There also I could not stop thinking about death. So please suggest me something to overcome this fear of death, and I also think it is wasting a lot of my time worrying about it.