*When you find yourself clucking at everything (from cars to dogs to family) when they aren't moving fast enough for you.
*When it doesn't matter how many times you wash your jackets, boots, etc., they all smell like horses (and you really, really don't care... you even like it).
*When you find yourself getting claustrophobic and giving the "mare glare" to people who get too close, and then pushing on their side because they're in your bubble.
*You constantly complain about getting up at 7:00 on a weekday but you're up before your alarm at 5:00 for shows or anything else horse-related.
*When you can find anything you need in your tack locker within seconds but your room looks like a tornado hit.
*You fall off your horse and your first thought is not "Ow" or "Am I hurt?" but instead "Where's my horse? Is she okay?"
*People get annoyed because pretty much the only thing you ever post on social media sites relates to horses. But they'll take that any day over the constant conversations about horses in person.
Of course, that's no where near everything, but I figure everyone else has mentioned most of it