We have just unscrewed and taken the doors off our large TV unit as I could not stand saying "no" for the thousandth time to my 14 month old as he closes the door while my 4 year old is watching tv. I hate the way it looks without the doors, but I really could not stand it another second!
Anyway, I really need help with discipline. My ds1 was never like this. If you told him "no", he never did it again. My 14 month old just laughs when we say no. We try to minimise the times we have to say it by keeping our flat safe for him. He has free access tom ost things, or we have door locks on things we don't want him getting into. The main problem is the tv. If ds1 is watching, he regularly turns it off (he can reach the button). We say "no" firmly and put him in his cot for 1 minute time out. (We live in a flat, not a house so everything is on the same level and nearby). He really doesn't seem to care. And as soon as we let him out, he goes back and does it again. Same with closing the doors. We don't smack. We try distracting which works sometimes. He is really determinded though. He knows he sholdn't be doing it, but does it anyway.
I really never had any of this with ds1 so don't know what to do!