While a lot of words have been said aiming to alter worldviews, a lot fewer words have aimed to alter self-images. I believe this makes it likely that self-image memes could face less competition than worldview memes, and may exert more powerful effects on behavior, both within and across individual brains.

What memes do we know of that reliably seem to produce self-image changes in those who consume them? Religion comes to mind, but are there others? (BTW, worth noting that some religions have "spread this religion" written in to the identity associated with them, but probably many memes with identity-altering payloads aren't going to be disproportionately spread by those who carry the identity.)