To me fear is one of things that the abuse "gives" us when robbing us of so many other things - our innocence, our purity, our ability to look at others without fear. In exchange for all the good things, abuse leaves us with that fear, shame, guilt, confusion, despair, self-loathing, etc.
For me, the way to offload that fear that I felt back then is it consciously remind myself when I am feeling triggered in similar situations that I am NOT back there any more. And that I can NOT be subjected to the same things that I was as a little boy. It keeps me grounded when triggering events occur. Hope this helps.