I can't really relate, I am sorry. I was addicted to a game at one time but I don't have an addictive personality (quit smoking cold turkey after years) and so it didn't take me long to realize it and just quit cold turkey. Facebook has never drug me in or anything like that I use it just to keep up with friends (most of whom never contact me on there anyways) and I check it maybe once every 3 days or at most once a day and that's about it.
I understand though from the game and I don't have much advice other than instead of using FB go out with friends! That's what I did. Movies, and things like that. But still, I don't see it as unhealthy because no matter what we do couldn't it be used as an addiction? I had a girlfriend that was ADDICTED to being with friends and never paid me any attention because of it. So as long as it doesn't effect your life and you know that there are other priorities it shouldn't be anything but just a hobby and that isn't unhealthy.
Cheers