Nietzsche is a determinist like Spinoza, a fatalist like the Greeks: character is fate, we only become what we already are (Aristotle's more genteel expression: no one achieves arete IN SPITE OF his base of natural potential, only because of it). Aristic moral "fiber" must exist first of all as an instinctive imperative, and second as an imperative of character, before it can be cultivated by an appropriate directorial culture. The resources that make human beings ultimately philosophical or spiritual (Aristotelian eudaimonia) are so profound and structural that of course they cannot be "learned"; if one has them, they can be developed and cultured, but that is not the same thing as "acquiring" them.
You posses the ability to tap a bottomless well of physical and psychic energy (called "chi" in Chinese). With it, you can harness the magickal power of the universe. Yet most of us unknowingly block the flow of this power, and live out our lives not reaching the potential that we could achieve if we only knew how.