You have an enneagram type in each center (head, heart, gut) and a wing on each of those types. The wing is the type on either side - so if you’re a 7, you would either be a 7w6 or a 7w8.
These wings create our “shadow” - an aspect of ourselves that we have access to but either reject, abhor or envy in others - because we don’t really see or acknowledge those elements so much in ourselves. So if you’re a type 9 with an 8 wing, you might see other people doing 8-ish behaviors - like being assertive, taking up a lot of space, streamrolling, being controlling - and it might trigger you, upset or annoy you, or you might wish to be more like that and therefore it creates a kind of envy.
The irony is, you do have access to those behaviors, they’re just in your shadow. And we have that in each center. So, if you have a 4w3 in your heart center, even if it’s not your core type, you will have an awareness of what your wing is doing in the heart or “image center”.
4’s are overly self-indulgent and inwardly self-focused and in a constant state of separateness, and often find 3-ish behavior’s of self-promoting, putting themselves out there, networking, social climbing, greasing people’s wheels, adapting to ideals - to be totally grotesque and cringe. Or the 4 heart may envy their shameless ability to do these things as the 4, even if not the core type, so a fix, still has access to it and can behave this way - they just cannot see it in themselves.
And if in your head center, if you have a 6w7, you have “superego” in the head center which is giving you an awareness of rules, morality, doing what’s right, how what you do impacts others or the people you care about, the collective, and unconsciously seeking a kind of baseline consensus or agreement - and because this is also the “fear” center - you are seeking security in your dominant instinct (social, sexual, or self-pres). So when you see 7’s or 7 fixers out there being chaotic and feeling the rules don’t apply to them, just making shit up on the fly, not caring about how what they say or do affects others, it can be both or either triggering/annoying or something you wish you had access to. “If only I could be so confident and careless.” But again, you also have access to that, you just don’t necessarily see it.
So you have a core type, a trifixation/trifix,, and then you have your shadow type… what you loathe, envy, ignore or are annoyed by… can you see your shadow? What do you dislike or like about what you see?