1. Establish good communication: First, try to establish an open, understanding and respectful communication channel with your younger brother. Knowing his thoughts, feelings and opinions can help you better understand his motives.
2. Set clear expectations and rules: Tell him clearly your expectations and basic rules. Ensure that these rules and expectations are fair and reasonable, and meet the standards of behavior that he understands and accepts.
3. Establish a positive feedback mechanism: when he makes good behavior or makes progress, give positive feedback and rewards to encourage him to continue. But at the same time, when he does bad behavior, he should also be properly educated and punished.
4. Provide guidance and learning opportunities: provide him with opportunities to learn and grow, and help him develop his life skills and social skills. Provide him with a safe learning and exploration environment, encourage him to ask questions, and promote his curiosity and thirst for knowledge.
5. Establish a positive family atmosphere: strive to create a positive, supportive and caring family environment, so that he feels accepted and respected. Reduce any situation that may cause conflict or anxiety, such as violent language or physical conflict.
6. Seek professional help: If your brother's behavior problems persist or seriously affect his life, you may need to seek professional psychological counseling or therapist's help.
Generally speaking, educating a non-biological brother requires patience, understanding and guidance. Respecting his personality and needs and insisting on setting appropriate behavior boundaries and expectations will help him grow up healthily.