Bad habit is like         a bad breath. 

Those who are not so close with you they won't really notice it. Even if so, they don't need to spend time with you for a long time so probably its bearable, won't comment anything.

Those who are close with you, or need to be with you for a longer period are the ones who affected by it (most of the time you yourself won't realized your own bad breath all of the time!) , either they somehow can bear with it or they tell you about it hoping that you will do something about it. So its up to you yourself whether to do something about it. If you managed to get rid of it, congrats! If no (cause you don't care/somehow can't get rid of it), see whether your partner can take it or not, if no, sorry that he/she has to leave you/have conflict with you because of that.

We all need someone who dares to tell us about out bad breath and very own realization about the bad breath and try to get rid of it. If not, we will just continue to smell bad...no one wants to interact with you unless they want something from you.