I have a beautiful son who has just turned 11 - he will be starting high school in September. I am worried about him as he has some major issues with his temper 
My dad died 2 years ago and my son was very very close to him, and with his death being so sudden it really really affected my lad. At first it was just before holidays (we go to Skegness 2/3 times a year) and my son used to be so weepy right before them as I think he felt guilty about looking forward to the holiday as my dad always used to come too.
Over the last 4 months it is getting worse. He has tantrums, throws things and his attitude is terrible. He is especially worse with my OH (his dad). He also gets really childish too - he plays with his 6 year old brother and gets really daft, and when we try to tell him to behave he laughs at us or just ignores us and carries on.
I can't really describe how bad he is in words - it's not just normal temper issues - he has serious temper problems, where he tells us he hates us, wishes he was dead and he is also violent to his brother and sister (aged 7).
What can I do ??
I have tried grounding, losing pocket money, losing his laptop and phone, but nothing works 
He is such a good boy when he is not playing up, and has a heart of gold and I want the best for his life as he deserves a good one - but it worries me that his temper and behaviour will be damaging for his future if I don't do something now.
I am sorry for the very long post, and hope someone can help x