Discuss the role played by self-concept on an individual's behavior.

Answers may vary. Convictions, beliefs, and ideas about the self (that is, one's self-concept) have been generally recognized as crucial determinants of human behavior. Thus, there are strengths in having good self-esteem and in being realistically aware of one's positive attributes, accomplishments, and potential as well as one's limitations and deficiencies. A healthy person can accept limitations as a natural part of human fallibility without being overly distressed or discouraged. People with high self-esteem, in fact, can joke about their weaknesses and mistakes.
Many people, however, are tormented with feelings of worthlessness, inadequacy, and helplessness. These and similarly self-critical feelings pervade their functioning in diverse negative ways, including the following:
Underachieving in life because of imagined deficiencies
Passing up opportunities because of fears of failing
Avoiding social relationships because of expectations of being rejected
Permitting oneself to be taken for granted and exploited by others
Excessive drinking or drug use to fortify oneself because of feelings of inadequacy