A person with unhealthy confidence can come across as arrogant, egotistical, or overly self-assured. Synonyms for this kind of behavior could include overconfidence, conceit, presumptuousness, or cockiness. Unfortunately, unhealthy confidence can be detrimental to a person's personal relationships, professional prospects, and overall well-being. Those who exhibit unhealthy confidence may have difficulty taking criticism, listening to others, or showing vulnerability. It's important for individuals who struggle with this behavior to seek help and recognize that true confidence comes from a combination of self-assurance and humility. By working to cultivate healthy confidence, individuals can build better relationships and achieve their goals in a more positive and productive manner.