Witchcraft is not about being psychic, or a great diviner, or a writer of lovely rituals. Witchcraft is a journey, not a privilege of birth. I believe that Witchcraft must involve some degree of work and commitment to be a meaningful spiritual path. I think that anyone who has endeavored to explore Witchcraft will agree that the work is a part of the learning process. Those who work diligently to learn will also likely become better educated than those who boast only natural ability.
Natural ability is no match for the intense desire to learn and succeed.
I cannot pretend to know what happens beyond the veil, although I do have a theory. I do not believe that being a Witch in one life will insure we are one in the next. I also do not believe we will retain our specific knowledge of the Craft from one life to the next. A great tarot reader in this life might not be so great in the next incarnation. Nevertheless, what we do retain is the spirit, which matures and develops as we progress.