Help, I am at my wits end... my 9 yr old son is being vile, causing arguments, being deliberately mean to his brother and sister, forgetting his manners, not listening to me, horrendous attitude, showing off, not sharing etc etc I have tried the gentle approach, and the not so gentle approach, shouting, reasoning & sending him to his room - but nothing seems to be working. What do I do next - I am finding it so draining - he's just ruining everybodys day.