Communication is process where a message is transmitted from one person to another. There are two types of communication, they are called nonverbal and verbal communication. Nonverbal communication refers to body movements, in other words body language, while, on the other side, verbal communication refers to language and script. It is very important to know how to express and communicate properly, because with effective communication we may approach to successful results. Obviously, quality communication itself is not enough in interpersonal relationships. In order to have firm relationships without any problems, mutual trust is needed between the people who communicate with each other. There are many styles of communication. One of them is assertive communication. Assertiveness or, in other words, assertive communication is the skill that is needed by virtually all of us because by means of it we can explain in a decent way to the other side that hampers us or what we do not like about their behavior, and there is no way that we can hurt or undermine the other side. To improve our communication skills we have to train and learn each day to raise our communication skills to a higher level. Nowadays this is not a problem because there are different types of training, lectures and seminars that we can attend if we want to improve our communication.