If you dream of writing in a diary, you should pay close attention to the other symbols in your dream, because they contain an important key to your future happiness.
To dream that someone is reading your diary, or to dream that your diary is stolen, indicates that you are keeping secrets. You have difficulties telling others how you really feel.
If you dream of reading someone else’s diary, you are mistrustful of others and you tend to poke your nose into other people’s business. Perhaps you have recently stumbled upon some information that was not meant for your eyes.