My son is turning one in less than a month. I am in the same situation as you. What works for me is be consistant. My son wants to bang the doors on our entertainment center, I'll firmly tell him no and put him in front of his toys. We have to continually teach him not to. It works. He KNOWS he's not supposed to do it. We have been doing this since he was 8 or 9 months old. He tests us now by going by the doors and he'll just look at us like "I'm going to do it", now all we have to say is Lucas, no. You don't want to wait to discipline, especially if your child is 1 now. I think parents underestimate their children. Kids understand a lot more than they think! Hope this helps!