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So what does this have to do with life design? Just this: when you remember that you are always playing the infinite game of becoming more and more yourself and designing how to express the amazingness of you into the world, you can't fail. With the infinite-game mind-set, you are not just adept at failure reduction—you are truly failure-immune. Sure, you'll experience pain and loss or serious setbacks, but they won't make you less of a person, and you don't experience these setbacks as an existential "failure" from which you can't recover.
Jung saw the two as attitudes toward life, which in most people alternate, like breathing in and out. But a few are more consistently in or out. Furthermore, to him the two attitudes had nothing directly to do with being sociable or not. To be introverted is simply to turn inward, towards the subject, the self, rather than outward toward the object. Introversion arises from a need and preference to protect the inner, "subjective" aspect of life, to value it more, and in particular not to allow it to be overwhelmed by the "objective" world.
