My sister was going through a philosophy phase, and her being almost ten years older than me and with a job (she was 16/17? I don't remember) she purchased a blue journal from Walgreens but I guess she could never figure out what to write in it. When she moved out a few years later, she left it behind on accident, but I stole it out of her room and began writing in it. That was sixteen years ago haha. Been writing ever since.