Sometimes we don't even realize we have a bad habit ... and a lot of times we can't even conceptualize NOT doing that bad habit. I think the very best place to start in breaking any habit is to get excited and start day dreaming. It's important to nurture this. If what we're doing isn't getting us some benefit we wouldn't do it in the first place ... so once we know why we're doing it it becomes a lot easier in stopping to do it.