It's always tough to live with a family member. You most likely did it when you were young and then moved out for a reason. It's so much easier to maintain a healthy relationship when you don't also have to share a bathroom or a kitchen with them. But anyone living in close quarters knows how much your roommates can get under your skin, even when they're not doing anything wrong. You get to witness close-ups of their little habits, quirks, and shortcomings, and they can grind your gears no matt…