If you live with other people, there is friction, irrespective how much you love them. And often no easy way to resolve. Example: Just today morning, I had to drop my teenage son to an exam center. I woke up before my normal time (and it being a Sunday) so that he is not late because of me. But he was 15 minutes late (he always is, whenever we need to do an errand together), and there is no easy way to handle. The question is: you try and explain why being late is not good (he also knows, obvious stuff) or just yell?! Today, I didn't so I feel better about it.