How do i break my gum chewing habits in school?

Practice : While personal prescription cannot be given here, unlearning can be harder than learning. Habit strength is maintained by pleasurable feeling or relief. It will diminish the longer you dont do it, so it will get better. Distraction techniques, imagery, or self-reward for increasing amounts of time or days without chewing or self-imposing fines can help. Also a cognitive-behavioral psychologist.