You stamp someone with a "moody" label and all of a sudden you view them only as a moody person. You'll run on autopilot with them, calling them "moody" any time they try to communicate their emotions. By doing this, you won't even acknowledge what they're feeling.
I fight, deny, push and run. But it always catches me. It's always waiting for a moment. A glimpse of a bill, a peek in the laundry room, an unintentional comment, random everyday moments I can usually brush off. But some days those little sights are my monsters.