To prevent individual team members from being overconfident and affecting cooperation, the following strategies can be adopted: 1. **Establish an open communication atmosphere**: Encourage open communication between team members, so that everyone feels that everyone's opinions and ideas are valued, thereby reducing the impact of individual members' overconfidence on other team members. 2. **Set clear team goals**: Ensure that all members are clear about the overall goals of the team, rather than simply focusing on individual performance. This helps to devote personal energy to collective success. 3. **Clear division of roles and responsibilities**: Clarify the roles and responsibilities of each team member in a project or task, and reduce the problem of unclear role and task boundaries that may be caused by individual overconfidence. 4. **Encourage team diversity**: Through a diverse team background, promote the collision of different perspectives, so that everyone realizes the value and necessity of different perspectives. This can help reduce the problem of overconfidence from a single perspective. 5. **Provide constructive feedback**: Through regular feedback meetings, provide specific and constructive feedback to help individuals recognize their shortcomings and areas for improvement. 6. **Cultivate team spirit**: Organize team building activities to strengthen trust and collaboration among team members and let the team realize the value of cooperation. 7. **Establish a mentor system within the team**: Through the internal mentor system, help new employees or employees with strong self-confidence better integrate into the team culture and understand the importance of teamwork. 8. **Pay attention to mental health**: Ensure the mental health of employees, pay attention to whether the overconfidence of individual employees is caused by stress or other psychological factors, and provide them with support. Through the above strategies, the relationship between the overconfidence of individual members and teamwork can be effectively balanced, and the overall teamwork efficiency can be improved.