3yr old hitting

Hi Ladies,

I need advice, my soon to be 3 year old is hitting a lot. He punches his sister if she tell him something. He is constantly throwing things and “play” hitting. He can be really sweet and has been more loving lately but his level of aggression can be intense too. I am at my wits end. I feel like I am failing because of his bad behavior. I try to respond in a loving manner, angry, “ignore it”, but nothing works.

Have you dealt with this with your kids? What have you done differently to be. Better parent?