It can be regarded as a kind of diary, but also like a description of one's own psychological activities. I have never shown my inner self to anyone, and I want to write about my truest self. It can be considered a kind of psychological therapy, since everyone doesn't know each other anyway. You can also give some inspiration to other people, because everyone is different. Instead of writing about others, who knows the inner activities of others? I don't understand it either, but I found that I understand myself very well, so I want to write it down and leave a thought for myself.
Concept: psychological description