Not good, GREAT! It is the first boundary I have set. Even better: my W invited a houseguest to stay over the weekend without asking me. So Friday night she returned to the BR. I was not deterred. I told her she could not stay. I kept repeating my boundary. She stormed out like a teenager. I think she just finds one of the kids beds to sleep in. I don't think the kids mind too much. In fact they probably rather like having their mom sleep with them. I think it is dysfunctional. There is a guest room in the basement that she could use (when there are no guests) but I think she is still trying to prevent the kids from noticing that I kicked her out.
I found an awesome thread, a success story, that I think everyone should read. It illustrates DB and is relatively brief. I read the entire thread in about 3 hours. It is by Onguard. Just amazing. His writing is succinct and both his mistakes and successes are illustrated so well. It gave me hope. Here is the link: Onguards thread I think EVERY LBS should read it.