I just wanted to add one thing...I personally dont think that "NO" is a good word to be using over and over.
If you do this guess what what one of the babies first words are going to be? NO NO NO NO NO..over and over and to everything!
I think its better to say things like "We shouldn't touch that, it is dangerous. Lets do this instead" then distract.
I also don't think that discipline will work for a child who is only 7 months. Its a little too young..and if the baby is crying every time its obviously too much.
--this is just my opinion though. I grew up in a home with a step father that was WAY too strict, even abusive at times (Im not saying your husband is abusive!) and I dont really think there is a need for it. It just made me resent him.