Libras don't like to be alone and need to feel needed, so our most common addiction is love addiction. We crave affection to the point of seeking it in inappropriate people or in needy ways in our desperation to be needed.
It might sound pathetic, but it's not. Love addiction is very common, even in other signs. And the addiction need not be romantic. Love addiction can be to friends, pets, kids, a celebrity, a teacher, even a boss or family member. It is simply having an overwhelming need to always feel deeply attached to and adored.
So, how to break the habit? Learn to love yourself more. When you feel very loved from within, you won't seek it outside yourself, at least not to a desperate extent. You are one of the most lovable signs, so it shouldn't be too hard!