Keeping a diary can help junior three students improve their writing ability and observation. Here are some suggestions on how to keep a diary:

1. Find the right place and time:

Find a quiet and comfortable place, such as your room or library, at a fixed time, such as sometime every night or weekend.

2. Prepare a diary:

Choose a beautiful diary, which is moderate in size and can be carried with you. Write down the date and day of the week on each page of your diary, which will help you record what happened that day.

3. Write down your feelings and experiences:

Write down what happened that day in your diary, including what you did, what you saw, what you heard and what you felt.

4. Keep it simple and clear:

You don't need to write a long article to keep a diary, just briefly describe what happened that day and your feelings.

5. Maintain continuity:

Keeping a diary requires persistence and writing every day, even if nothing special happens that day.