There is fear before the battle, but once the battle begins the fear is suppressed by reaction. I think of fear, kind of the way I think about worry; the main difference being that worry is absolutely and totally worthless.
Although fear can have value and can be a life saver when it keeps us from doing something stupid and dangerous, it can have very debilitating effects on us, like when we decide we're never leaving the house again.
I prefer living in the moment, but really, I didn't have much to do with that as a "decision." Focus is highly underrated. :) Nice piece!