i feel like 7s, 4s, and 1s have a deep individualistic streak. they really focus on being in control of how they shape their own experience. they all learn a kind of art to it, to an aspect of experience, which makes them very interesting and inherently creative and at times excellent role models and arbiters of how to deal with your shit and still be a good person.
2s, 5s, and 8s, by contrast, kind of overidentify with the world itself. 3s, 6s, and 9s overidentify with others. not that these are only bad, because 3s, 6s, and 9s master the art of rapport, and teamwork, and relationship. 2s, 5s, and 8s who learn to love themselves serve the world.