Your extroverted best friend dragged you to a Halloween party. You figured you'd be fine as long as you stuck close to her — and then she was immediately pulled away by her other friends. Great news for your crippling social anxiety. Now you're sitting alone at a party where you know no one, managing your social battery in real time, scrolling your phone to calm down, and hoping you can hold it together as unfamiliar faces try to make small talk. Dealing with people is scary. Especially when you're tired.