He is suddenly so stubborn and really emotional and we have no idea how to handle it 
I have tried reasoning, shouting, disciplining on the naughty step and today I have been pressed right to the end of my tether and I threatened to smack him
I don't want to have to resort to threats of violence or the act itself but I just cant cope with how he is behaving. I know kids can be irrational but he just screams and screams in temper and I don't know how to help him. His brother is 4 months old now and is also starting to be needy and whiney and some days I just feel like leaving. Please does anyone have some coping strategies I can try? I really do need some help.