First of all, you should have a little willpower, have your own goals, play as much as possible when you finish, but also have self-control. You can't play all the time, set yourself an idol as the goal and keep working hard. If not, there is a way to hurt yourself a little. When you play, think about your relatives, parents, teachers, what they have done for you, and whether you are worthy of them. Remind yourself from time to time (or ask others to help you remind you) and scold yourself constantly, so that you can concentrate on your study. Really can't. We'll see.