As they say, with one child you are a parent, with two you are a referee! It's like you can't take your eyes off the team for a second, or someone is getting a hard push off the bed! While sibling rivalry is normal, at times bickering goes to the extent of being too stressful for me. The moment I hear a conflict brewing, I am ready to enforce rules and call out penalties. And just like a referee, you are supposed to appear calm and reasonable even while in your head you feel like breaking the wall out there!