A related discussion, Is my stepson acting out? was started.

I am having similar difficulties with my daughter who is 6 years old. Her problems started at about 3 or 4. I also just had a baby. The baby hasnt changed her behavior much, I see a little jealousy, but when she starts crawling around we are going to have problems. My daughter shows no remorse for the bad things she does. She is obbsessed with the dog, she cant leave him alone, she hits him, yells at him, kicks him. Same with the cat. Its horrible. She thinks its hilarious when she gets in trouble. Timeouts(yes done properly), spanking, ignoring bad behavior, rewarding good behavior. Nope nothing works. I try to be a good mother, I spend time with her when shes not attacking or screaming at me, I read her 3 stories, sing a song and do "happy thoughts" with her every night. We were going to counseling for 7 months and got nowhere. They said ADHD and tried to put her on meds. They fluffed off the fact that she hurts herself(has fractured a tooth, knocked 2 loose, falls, runs into stuff), animals(has killed a hampster and a parakeet,currently torturing the dog and cat), and me(hitting, scratching, kicking etc...) I went to our pediatrician and was recomended to another doctor. But same old problem, have to wait 2 months for the appt. I just want to know whats wrong with her, can it be fixed, is it my fault. Im going crazy.

Other things she does. Peers in school dont like her inappropriate behavior. Obsessed with smelling her hands,food, and toys. Freaks out over everything, nothing goes the way she wants it to. Abnormally attached to her stuffed animals. Talks TOOOO much to strangers when we are out and is skiping around in sentences and pretty much talking nonsense to them, trying to tell her life story in 2 minutes.
The list goes on and on...
Any advice would be helpful

Thanks, feels good to vent

It's very unlikely that your son's behavior is brought on by remembering his younger years. However, it may well be that the influence of those early years is playing a role in his behavior. It's also not very likely that the addition of the baby is a central issue, though I'd need to evaluate a child before I could be definitive about that. Is there any family history of mood disorder? It is possible that his behavior is symptomatic of childhood onset mood disorder (e.g., depressive disorder). In any case, a systematic program of behavior management is required. If you read Lynn Clark's book titled SOS: Help for Parents, you'll see the sort of plan I'm recommending. I will address the school behavior here: Establish a contingeny system, day by day. Make something your son values (e.g., video game, television, outdoor play) contingent on following the rules at school. Do this on a 24-hour basis - that is, every day he wakes up is a 'new' day and he can earn whatever privilege you decide upon.