a lack of self-confidence的用法和样例：
- Similarly, the way a person carries herself tells a story.People with slumped shoulders and lethargic movements display a lack of self confidence.
- Regarding in the field resuscitation, 31% answered that they won't do CPR because of fear of catching a contagious disease, legal problems and a lack of self confidence.
- People with slumped shoulders and lethargic movements display a lack of self confidence
- The main impediment to growth is a lack of capital.
- She suffers from a lack of confidence.
- There is a lack of confidence in the government.