There are lots of things a warrior can do at a certain time which he couldn't do years before. Those things themselves did not change; what changed was his idea of himself.
Carlos CastanedaDon Juan assured me that in order to accomplish the feat of making myself miserable I had to work in the most intense fashion, and that it was absurd. I had now realized I could work just the same in making myself complete and strong. "The trick is in what one emphasizes," he said. "We either make ourselves miserable, or we make ourselves strong. The amount of work is the same."
Carlos Castaneda