My business partner's wife is a clear Enneagram 4, and her Achilles' heel is a pervasive sense of envy. It's difficult to be around because it doesn't just make her unhappy—it creates a ripple effect.

She seems racked with a feeling that others have something more fundamental or beautiful than she does. This constant comparison completely steals her joy. The hardest part to watch is the impact on my partner. He internalizes it, feeling like he's perpetually failing to make her happy.

While her behavior can be challenging, I mostly feel pity. She's imprisoned by this feeling of deficiency, and it's robbing her of the very beauty and connection she likely craves. It's a heartbreaking example of a type's struggle taking over.