Self-confidence is one attribute every person should have in order for him or her to assert himself or herself. Many kids and even adults suffer from lack of confidence.
There are people who lack the ability to make strong decisions in life. Others are unsociable and are almost left alone often, while still others are too reliant on outside opinions and lose the independence of decision making.
All these result from a lack of self-confidence.
That is why some parents of children who are exhibiting signs of lack of confidence are taking the problem very seriously. They immediately send the child to a therapy or to a behavioral treatment program.

Self-confidence is a really important for everyone, and lacking it should be treated as a serious problem. A person's future and career certainly depends on whether that person has trait of self-confidence in how they present themselves and solve problems.

Starting to build self-confidence:

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People are not born with self-confidence. That trait is developed as a person learns more about the world from infancy to childhood to adulthood.
Remember, without confidence, you would not have been able to learn how to walk, talk or do other necessary activities.

People with good self-confidence are those who have a belief that everything in life is achievable if there is proper motivation. Usually, these
people are those with positive and cheerful disposition in life. Some observations also indicate that those lacking self-confidence are usually those who have experienced sad or traumatic events in the past. A dysfunctional family life in childhood can fail to provide the modeling needed for a child to emulate.

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A simple disappointment can be considered a major event in a child's life, especially if the ill feelings that came along it were not properly addressed.

Thus, simple embarrassment can be a major and serious cause of lack of self-confidence in a person. Shame can easily develop.
To start building up self-confidence, it is advised that the person gain and have a positive outlook about life. He should be cheerful and fun-loving and must have a good outlook.