For example, tell yourself that if you pay attention for the next 15 minutes, you can have a few peanut M&Ms from the bag you’ve stashed in your backpack. For every additional 15 minutes, you get a couple more. Or, instead of M&Ms, you can allow yourself to check your phone briefly. You could also tell yourself that if you take good notes through the entire class, you can play your new video game for an hour when you get home. This can be a good motivator if you have trouble making it through the whole class, or if the class is pretty long. After all, if it’s a 3-hour class, you will probably get tired of eating M&Ms or checking your phone for updates. For example, before walking into Physics today, tell yourself that if you pay attention the entire time, you can grab your favorite mocha latte or hit the arcade right after class. For example, maybe you find French class excruciatingly boring. Hey, you’re not the first person to feel that way! Tell yourself that if you pay attention today, you’ll treat yourself to that cool new French film (sub-titled, of course!) you’ve been wanting to see downtown. Or you can treat yourself to a delicious croissant or éclair after class.  After paying attention in class and scarfing down an éclair, you'll probably be feeling pretty good. See? Maybe French isn’t so bad after all. Doing this helps you associate positive things with your class. In turn, this may encourage you to pay attention more. If you walk into class already dreading how boring it's going to be and telling yourself that paying attention is going to be impossible, you won't feel very motivated to stay on track. Instead, walk in telling yourself that you will succeed at paying attention in today's class. Set your mind to achieving your goal! For example, instead of thinking "Ugh, I hate this class! It's so boring," you could think: "Maybe I'll learn something interesting today." If you have a friend in the class, ask them to discreetly let you know when your mind has clearly wandered. They can tap you on the...

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Write a summary of the previous text in Vietnamese:
Đặt ra các mục tiêu và các phần thưởng nhỏ cho các mục tiêu đó. Chọn một phần thưởng mà bạn có thể có ngay sau giờ học. Tự đãi mình món quà gì đó có liên quan đến môn học. Chuẩn bị tâm thế đúng đắn trước khi bước vào lớp. Nhờ một người bạn giúp đỡ để khỏi đi chệch hướng. Đừng nản lòng nếu bạn vẫn thấy khó khăn trong việc tập trung chú ý.