Help!

Help!  I feel like a first time Mom.  Maggie is a TERRIBLE 2 year old who is not yet 2.  I have never had a kid that throws themselves on the ground, stomps feet, slams doors, hits, yells MINE, grabs, pulls, kicks, etc.  You name it, this girl has done it this week.  I am trying to remain patient, but I am so clueless.  She is everything I always read about and laughed at other moms.  Ouch.  It is coming back full force at me now.  Where does she learn this?  She is communicating good and finally talking, but it is ALL about power.  She will throw a fit over the dumbest things like waiting her turn to get a drink.  I don't give in and always make her wait, but it is still loud and embarrassing if we are at the store.  Her poor sisters complain about her all the time and always ask if we can leave her in the car.  :)  I hope we will figure this out soon.

On a side note:  I took her to the grocery store by herself the other day and Eric stayed home with the 3 others and realized that is the first time I have EVER taken her anywhere by herself.  Usually she is with Carley too. Ouch.  I definitely need to do that more often so she can get Mommy time.