Monsters...

Why does every child, doesn't matter their age, start to think there are monsters in their room. Garon has always been my child that has had a difficult sleeping. He has been doing so good though. But last night, I swear I was in and out of my bed more then I was in it. Between Brisa cutting her top two teeth and Garon claiming that there are monsters, we had a pretty active night. Any ideas to help tell a two year old that monsters don't exsist? Send them my way, I could use it.