i need some assistance on changing my 4 year old daughters behavior, she canbe a sweety, but most of the time shes attitudy and talk back alot, she thinks its her way or the highway? and ive tried everything i know of,.. but nothing worked. she stil acts like this and i dont know how to fix it? shees like that because her daddy would go behind me when he had her on weekends and tell her yes yes yes.. now when i tell her no, the whole world ends, i mean fits, tantrums, yelling at me.. saying she hates me already, and i need some advice on how to make her realize momy is boss? anyone have any ideas?