I have a feisty 4yo DD and think I need a clearer sense of what our family rules are. Should be straightforward, right? But somewhere between those parenting essentials of 'being consistent' and 'picking your battles' it all seems to have got a bit blurred. What were the really key rules in your house, that worked at home and out in the world and stood the test of time? (And what are the stupid ones I can forget)