By definition, self-esteem is the value you place on your own worth. It impacts how you think, how you feel about yourself, and it even has a say over your behavior and actions. You may look at people you know and assume they must have high self-esteem because they’re intelligent or attractive. In truth, there doesn’t seem to be any link between actual ability and what level of self-esteem someone holds. You could be highly intelligent and still have low self-esteem. Self-esteem is important, though. It may sway throughout your life, but children who are raised with a strong sense of security tend to find it easier to develop self-esteem later.