Since I was a child death is definitely something that I think about every day. But I think that everybody does. You try and avoid it but it's such a big thing that you can't.
If you continually diet you are putting your body in a quasi-famine situation. It slows your metabolism down and breaks the thermostat. Diets don't work. They don't help you understand why you're eating more than your body wanted in the first place.