How you are feeling or about things that are going on in your life that you don't quite understand. You could even write about your diet and water intake. Writing about things you are nervous about or things that are worrying you, is the best because it gets that off your chest <3
Write about your day and try talking about what you felt during the day! Talk about the highs, the lows, and everything in between! Talk About the future what are you dreams and your past.Really talk about anything until your hand gets to tired from writing or typing.