You're having a crappy day. Or a crappy week. Maybe even a crappy month. You're going through a breakup or someone you love is in the hospital or your gross roommate keeps leaving his socks on the kitchen table. Whatever it is, it's eating into your entire life, including your craft. So when you're in class or on an audition, that terrible day or week or month is taking over your imagination and your ability to be present. So all anyone sees...