M.N.
Well! I read everyone's responses. I can honestly say I feel your frustration as my son turned 4 this past June. The 1 difference between me and the rest of you mom's is that my son is the BABY of the family, not the other way around. I also have a daughter who is 10. My daughter didn't go thru a lot of the "frustrating 4's", maybe it was because she was an only child at the time. But a couple month's after she turned 5, her father and I split and I found out I was pregnant with my son. That is when she changed! My kids are exactly 6 years (& 3 wks) apart. My daughter did resent him as he took a lot of attention from me. He was a great baby but had a lot of health problems from the age of 1 1/2 - 3yrs old (when he finally had his tonsils and adenoids removed and tubes placed in both ears). He also has seasonal allergies and asthma.
Things are not perfect between my daughter and me, but they are better. One-on-one time is the key because they need to feel that they are still special and that you love them just as much as the new baby.
Now if someone can tell me what to do with my super-active, highly energetic, too charming, too cute-to-be-a-boy 4-yr old that would be great! I read what the other lady said about the food dye's and I might look into that. I know my son doesn't have ADHD, (I looked into it...) but he does seem so fearless sometimes! He thinks he can do anything and more. He swears he is my daughter's age (that he can do anything she can do!) He will climb up 13 stairs outside the rail and thinks if he jumps he will be fine! He doesn't listen well (and we know its not his hearing anymore as that was repaired with the surgery). My son does get a nap at school (he's in pre-K at the same private school my daughter goes too). My son was an awesome kid and I would say changed when he was about 3 1/2. This has been an extremely frustrating year for me as well, especially being a single mom! My son has tantrums, attitude, pouts, thinks I should buy him everything he sees that he likes, he argues, he doesn't sleep through the night either (he will wake up in the middle of the night and climb into bed with me).
All I can say is consistency, consistency, consistency! I constantly tell him I love him, but that his behavior is NOT acceptable and I will not tolerate it! I have left the store in the middle of a tantrum! You have to be stern so that he knows you are not a pushover! I turn off the tv, won't let him ride his bike or play outside, there have to be consequences for bad behavior and HUGE praise when he is good! I ask my son everyday how was his behavior at school and he is doing better! He has his rough days once in a while and I am trying to monitor what he eats for breakfast in the morning to see if that is a trigger.
Hang in there! I am glad to know that I am NOT the only one going thru this either! Do monitor sugar intake and look into the food dye's!