Sorry to hear that you are feeling upset these days. I know that you feel stressed with the college examination drawing near. What’s worse, you always stay up late to study, and as a result, feeling tired, you can’t concentrate on the lessons in the day time.
Just take it easy! Nothing serious and there’s no point feeling too stressed. If you don’t stay up late at night, it will be easier for you to have more energy and focus on your study during classes in the day time. Besides, by having enough sleep and rest, you will feel less tired so as to study more efficiently.
As far as I’m concerned, you should have a regular and better study plan. Though I’m in favor of studying hard, what’s more important is to have a healthy body first. Try to form regular sleeping time and improve your study effectively according to a scientific learning plan. In addition, you should take regular exercise in your spare time, which is of great benefit for you to feel more relaxed and relieve the stress.
I hope my suggestions will be helpful for you. Wish you all the best in the following days.