Please give me some helpful advice on how to get my 20-month-old son to stop hitting me. We have tried "no" and diversion...but this kid has the memory of an elephant. He will walk clear across three rooms to get back at me to hit me if he's mad enough. Tonight I took a cup away from him so he wouldn't spill hubby's diet pepsi everywhere and he hit me...hard. I told him no, so he turned and hit the puppy...hard. I picked him up and told him no way, absolutely not...and he hit me really hard across the face. He then spent five minutes crying hysterically in his crib because I was too upset to do anything else (and hubby was waiting for the snow plow guy to finish our driveway). Any advice on how to get this behavior to stop?