If you grind your teeth...better stop!

I went to the dentist the other day and spent 5 hours there. I thought that I was getting my teeth cleaned and checked but they did everything: cleaning, xrays and prepared two of my teeth for crowns! I like that when I don't have to go back once a week. However, I'm grinding my teeth down! I'm not actually grinding. I find myself rocking on my teeth from one side to the other! So I went to the drugstore and got a nightguard. I'll be wearing it during the day too...no, not in public!