I think that being judgemental has something to do with pride. Correcting a person comes from either being irritated by the wrong behavior or being concerned with helping that person doing the right thing. The motivation of the heart is what helps the situation. Communicating clearly to the other person where your viewpoint is coming from contributes to being a good citizen and develops compassion in the relationship. If the intention of correction comes from the need to discipline because that person is in an authoritative position, such as employer/employee or teacher/student or parent/child the outcome is understandable; if a friend jumps in to correct another friend with out it being clear where the point of view is coming from, then the situation can get out of hand, and one must change their communication skills with people to avoid what you call a "bad habit".