Self-confidence: firmly believe in the positive and healthy personality qualities and psychological characteristics of one's ability and behavioral strength, based on a full understanding of social life and a full understanding of oneself, based on a scientific attitude of seeking truth from facts and adhering to the truth. Which of the following is considered self-confidence:. ["Xiaoming's final exam scores are good, but he is not satisfied. He finds that many questions are deducted for carelessness, so he thinks that if he can be careful, the next time he encounters the same difficulty test paper, he will be better.", "Xiaoqiang's test scores are generally higher than those of Xiaojun at the same table, so Xiaoqiang believes that he is better than Xiaojun in all aspects.", 'Xiaolei found that his classmate Xiaowei had thicker arms than himself, so he firmly believed that his strength was certainly not as great as that of Xiaowei.', "Xiao Tao's family is poor. His parents work outside the home all year round. Grandpa and grandma are not strict with Xiao Tao. Therefore, Xiao Tao is naughty and stubborn at school and does not study hard."]