Li Ming is a very clever boy, but after he was promoted from primary school to junior high school, his grades dropped. It turns out that Li Ming is addicted to online games and frequents nearby schools. (1) Li Ming's obsession with video games leads to a decline in his grades, which shows that Li Ming has no clear learning purpose and lacks learning motivation. He corrected his mistakes repeatedly, and he was afraid of difficulties in study and fatigue, which showed that he was afraid of difficulties and lacked perseverance. He can't resist the temptation, and he is discouraged when he encounters setbacks in his studies, which shows that he is not good at self-control.

(2)① Set up lofty ideals and define learning objectives. (2) Set short-term learning goals and strive to achieve them, experience the joy of overcoming difficulties and achieving success, and cultivate interest in learning. (3) Make long-term goals, and ask teachers and parents to supervise their implementation, so as to be persistent, from beginning to end. (4) Strengthen physical exercise and cultivate will through physical exercise.