Our achievements are generally limited only by the beliefs we impose on ourselves. If we tell ourselves often enough that we don't have what it takes, then that will inevitably become our reality. But I also knew if I could somehow replace my doubt with hope, my fear with courage, and my self-pity with a sense of pride, then I just might be able to do this. It would involve paying a huge price in sweat and hard work; it would involve having to train longer and harder than ever before. And the mind would have to drive it all. It was a decision I had already made years earlier.