There are three main communication styles - passive, aggressive, and assertive. Passive communication is avoiding expressing opinions/feelings and not advocating for one's rights/needs due to low self-esteem. Aggressive communication violates others' rights through verbal/physical abuse stemming from low self-esteem. Assertive communication clearly states opinions/feelings while firmly advocating for rights/needs without violating others, coming from high self-esteem. The communication style depends on one's self-esteem and impacts relationships and personal development.