When my middle child was on her terrible two's, she used to threw herself on the floor with a temper tantrum, when this used to happened, I put her in her playpen and keep her there for a couple of minutes waiting for her to calm down, I used to tell her to calm down or else she will not come out, babies are pretty smart believe it or not, they try to control you around. She knew that whenever this happens, she was going to go inside her playpen, she really didn't want to be there so she calmed down and she finally stopped this behaviour. I put her to pre-school so she can start socializing with other kids and get her occupied in something. Now she is 10 years old and is very hyper but I don't have any problems with her up to now, only that she is so hyper, she can hardly stays sitting down, in school she is a bright student and teachers never had any complains, she is well behave in school. Usually we tend to think that when kids behave this way is because they have problems, but what it really means is that your child is too smart or hyper and this kind of kids have to spend their time busy in something or in any activity so they can spent the energy they have into that activity, I decided to put her in ballet classes, since she loves it. Vacation time is a nightmare to me, she keeps on saying that she is bored and wants me to take her to the park or to swim,etc., so I have to find time to take her.