Walking on eggshells means constantly scanning someone's mood before you speak, move, or make a decision, adjusting yourself in advance to avoid a reaction you can't predict. It's exhausting because it isn't just a mental habit. It's a nervous system that has learned to treat another person's unpredictability as an ongoing low-grade threat, and it keeps responding accordingly even when nothing is actively happening.

That's the part that surprises people: you can feel keyed up and tired around someone even during a calm conversation, because your body is still braced for what might come next. The eggshell-walking isn't overreacting. It's a nervous system doing exactly what it's built to do around unpredictable threat.

It starts somewhere around late afternoon. A low-grade tightening that doesn't have a specific cause, or has too many at once to identify. By evening, you're not quite present for whatever you're doing. Monday is not here yet, and already it is.

Sunday night anxiety, sometimes called the Sunday scaries, is common enough to have a name. It is also common enough to be dismissed as a personality quirk, or as something that is simply part of having a demanding job or a full life. But what it usually is, when it shows up consistently, is the body's anticipatory stress response running ahead of the week, and that consistency is worth paying attention to.

The holidays are supposed to be about connection and celebration. But if you're dreading the family gathering, counting down the hours until you can leave, or already planning your exit strategy before you've even arrived—you're not alone, and you're not broken.