You handle your daily responsibilities, manage a household, and navigate the complexities of adult life with a level head. But the moment your sibling shows up, that put-together persona often disappears.
Suddenly, you’re twelve years old again, trading snarky lines and bickering over who started what. It’s an emotional time machine you never asked to board.
If this sounds familiar, you aren’t being immature – you are experiencing adult sibling rivalry, a phenomenon rooted in decades of shared history.
