Self-knowledge is the basic tool for anyone who wants to learn and evolve. Regarding effective communication, it is important to identify our communication skills and weaknesses. In this video, a small introduction is made about self-knowledge and how it affects our daily lives

The following image shows four aspects that generate self-knowledge.

If we apply it to the communication field, it is interesting to reflect and specify what are our internal weaknesses and strengths that influence our daily social interrelationships and exposure to an audience.

On the other hand, and for the purposes of a better understanding of the environment it is also important to identify the opportunities that may arise with the importance of developing communication skills.
Another source of personal self-knowledge is based on inquiring about self-esteem. What image do I have of myself? Do I like it? Self-esteem greatly influences how we communicate. If an individual does not have a good and positive concept of themselves, their interrelations with others Eventually will be affected. Why? Mainly because individuals who do not know how to communicate effectively may in turn communicate passively or aggressively. In addition, their way of communicating may be impregnated with emotions that may not be well recvied by those around them.
Can you imagine a speaker answering a question in a hostile way simply because she felt questioned?

Another key factor is found in self- motivation. Do you know how to motivate yourself? From our childhood, someone should tell us how important it is to know how to motivate ourselves and not depend so much on the outside to achieve our goals.
A good source of motivation is the goal we have to communicate. Among others, a person may have objectives such as making themself understood, letting off steam, helping, teaching, convincing or persuading.
In addition, it is also motivating to improve skills, get a job, etc. https://positivepsychology.com/self-awareness-matters-how-you-can-be-more-self-aware/  In this article you can find more information about self-knowledge and relationships in different environments.

When communicating with another person or before an audience, it is necessary to take into account the possibility that there may be a series of communication barriers or interferences that distort, modify or devalue the content or intention of the message. These are some of the most significant communication barriers that we must take into account:

• Semantic barriers; related to the meaning of the words and the meaning and interpretation that each person gives them.
• Physiological barriers; linked to physiological defects of the sender and / or receiver that affect, modify and interfere with the emission and understanding of the message.
• Psychological barriers; relating to the psychological state, emotional state or prejudices of the sender or receiver.
• Physical barriers; noise, lighting, distance, media failure, etc. that hinder the process.
• Administrative barriers; they are those that originate from inadequate organizational structures. These may be due to lack of planning, unsubstantiated decisions, loss of information in transmission and poor retention, poor listening, impersonal communication, mistrust, insufficient period to adjust to the change or information overload.