I'm decently strong in a weightlifting sense. I probably won't put up huge numbers on the bench press/squat anytime soon, but I can do at least 205/315lbs on bench/squat, respectively. There are other forms of strength though, such as functional strength for boxing and any art of self-defense, and of course mental strength. Doesn't matter how much you can lift, if you're not functionally/mentally strong you're not going to put up much of a fight.
As for fear of death, when it happens it happens, but I try to make the most of my time here. You never know long you're going to be here. It's something I try and not think of.