A word for a thing that someone can mentally struggle with, or has a quirk for, kind of like (but not) hubris.
I've seen it around, but only a few times, and I can't for the life of me think what it was! I think it had something to do with neuro? Not neurotic, though.
As in 'Alexis struggled with many (word)'.
Neuroses was the word I was looking for, thank you @stevesliva !