Real Super Powers

My ability is to just know how to fight and kill. I also can't be killed when fighting. How do you develop something that is automatic? I mean, most of you, not all, have mental-based abilities, like clairavoyance, precognition, various forms of psychokinesis, and stuff like that. Those powers require time, if not concentration to initiate. Then there's a few of us that have physical-based powers, like animal-ferocity, animal mimicry, keen hearing to the point of being a power, and then like me, who just know how to fight and kill, without able to be killed. How are we, with physical-based powers, supposed to develop something that is nearly automatic? If you have answers, pm me. Thnx!