I have a younger brother, my own brother, who is 20 years old now. He plays games all day and does nothing. He doesn't want to study or go to work. what should he do ？

This is a common problem and can be solved by the following methods:

1. communication and exchange: sit down and talk quietly with your brother, let him express his thoughts and feelings, and find out why he is not interested in his future plans or his study and work.

2. Guiding education: Understand his needs from his expression, guide him to face the reality, tell him the consequences of not studying and not working now, and illustrate with examples or stories.

3. Provide goals and motivation: help him find a goal, whether studying or working, find a goal he is interested in, provide support, and encourage him to move toward this goal.

4. Establish daily rules: help him establish healthy life rules, arrange time reasonably, reduce game time and increase study or exercise time.

5. Seek professional help: If none of the above methods can effectively solve the problem, you can consider seeking the help of professional psychological counselors, who will have more effective ways to help solve the problem.

The above are just some suggestions, and the practice may need to be adjusted according to the actual situation.