A letter of suggestion on how to

Hello,  Jessie，

Thank you for your writing. I'm so sorry to hear that you find your new school life very stressful. It is a pity that you cannot fall asleep at night. I'm writing to offer you some advice.

To begin with, you can do some simple exercise before going to bed. You may fall asleep easily and more quickly if you feel tired. In addition, it's a good idea to drink a glass of milk in the evening. According to a science report drinking milk can let you have a sleep of high quality. What's more, why not listen to some soft and gentle music when you sleep? You will feel more relaxed with this music.

Hopefully these suggestions are useful to you.

Yours

Dr. King.