Good Morning A., I like Sheri's and Taryn's advice. We did something a little simular to Taryn with the tokens, When our kids were small we lived over seas, and with daddy gone all the time, our kids did their share of acting up, nothing major. My husband suggested to put the kids on a 5.00 a week allowance, but every time they dissabeyed or didn't do what they were supossed to we minus .25 cents, and at the end of the week, I would add up the minuses and then give them what was left, but my husband made it like a compitition to see who could earn the most money, Like sherri said we had our rule list and we had posted, I made it reasonaible, and they really enjoyed it. Also one of the things my husband did with our 3 kids, was once a week he took them out one on one, let them pick where they want to go (within in reason) and just talked, gave them a chance to talk about what they are thinking and feeling, or even confess something they did, that's been bothering them. Talk to your little girl, something maybe going on at school, or something maybe going on that she is afraid to approach you with but if you open the door for communication she may feel more comfortable. Don't take her to a doctor as Brandy suggested, nothing against Brandy, but doctors are so quick to lable a child ADD and tell you your child can't consentrate, can't sit still, can't this can't that, now your child has all these excusses to act up, and once any child get's the I can't vocabulary, their set up for failure. You are not a bad mom, you are a mom who loves her daughter and wants what is best for her. One more piece of advice, toy mentioned your 5 years old being so well behaved, don't compare them, to your daughter, it will just make her resent her sister and feel worse about herself. In our home we did 2 swatts for discipline, no full flege spanking, just 2 swatts, until age 10 then we did grounding. Been a mom for 26 years, our kids turned out great, and so will yours.