God has a plan for all of us, and gives us the necessary blessings and talents to fulfill what he tasks us with. For some this could well be being a warrior, as we know that God has often made use of warriors to further His will in the past.
So yes, there is such a thing as having “the nature of a warrior”, just like someone might be inclined to being a caretaker, or teacher, or priest or any vocation. You’re probably not going to be born with all the traits of a perfect warrior, though, so life experience matters in this regard like everything else.