" We now know that not only does the past influence the present, but that the present clearly influences the past. In other words, we are not doomed or damned by the past. Because we did have unhappy childhood experiences and traumas that left engrams behind does not mean that we are at the mercy of these engrams, or that our patterns of behavior are “set,” predetermined and unchangeable. Our present thinking, our present mental habits, our attitudes toward past experiences, and our attitudes toward the future—all have an influence upon old recorded engrams. The old can be changed, modified, replaced, by our present thinking. "

― Maxwell Maltz , Psycho-Cybernetics, A New Way to Get More Living Out of Life