My 5 year old son started kindergarten this year. He is a very sweet, kind and loving child, his teacher agrees as well. He loves to talk, actually he talks a lot! When my child gets mad he punches things, breaks his toys or sometimes he will slam doors. He gets in trouble for it when he does it. He started this about the time he started school. I just recently had a little girl 6 months ago and most of my attention is directed toward her these days. I feel awful that I don't get to do as much as I use to with him. I feel this is why he is acting out. Also he has an older cousin who is a devil child and that is being nice. I do not like my son being around him because he is mean, talks ugly, cheats my son at everything (games, chase, etc), is constantly telling him he is better than him, calls him names. (his parents do nothing about it) This is really hurting my sons self-esteem. My son tells me Colton embarrasses him all the time even at school. I tell my son to just stay away from him. Idk what else to tell him, what I'd like to say isn't very appropriate. We don't visit them anymore because of this but they still see eachother at school. My son still begs to play with him! I don't understand?? I just don't want this to ruin my child's self-esteem, make him shy, or build bad character. I was shy in school and it made it 10x's harder on me through school and life. What do I do?? Someone please help