Problem analysis: A's mistake is irresponsibility. My poor study shows that I am not confident in my study. Because he is addicted to games, his confidence also lies in facing up to his own shortcomings and trying to overcome them. So this is wrong. Establish your own self-confidence, ① learn to appreciate yourself, find your own advantages, and find the "fulcrum" of self-confidence. Confidence is a successful child. Without successful experience, there will be no self-confidence. We should accumulate success in life. To build real self-confidence, we must face up to our own shortcomings and find ways to overcome them. ④ We must overcome self-esteem and build self-confidence. Test center:

Comments: This question mainly examines students' mastery of the methods of building self-confidence and their ability to solve problems, which is conducive to improving students' ability to analyze problems. This is good for the development of students.