Communication is extremely important in human life. As social beings, we communicate daily, both personally and in business settings, with more than one person. Such communication can be verbal, nonverbal or e-communication. No matter what kind of communication it is and through which channel the process is taking place, it is important to know how to communicate successfully with a variety of people for various reasons. The principles of successful communication are the principle of clarity, the principle of substance, the principle of content confinement, the principle of accuracy and the principle of formulation. In order for communication to be successful, it is necessary to know well what it is about to communicate and prepare itself, to know the true purpose of conversation, to monitor the context in which communication is conducted, to consult with others if communication is more difficult, to listen to the tone and body language, communicate value, check feedback, communicate for the future, be sure the deeds follow the words and learn to listen. People who communicate well are good observers, understand the context, have high self-confidence without arrogance, respect others, emotionally intelligent, organized, creative, have good references, are not afraid to be wrong and constantly practice their communication skills. In addition, one should be aware of interference and communication barriers that can make it more difficult. Some of these obstacles are barriers to attitude, barriers to behavior, cultural barriers, language barriers and environmental barriers.