It is a book series focused on helping people with mental health issues improve their psychological problems. These cover designs make the topic of mental health accessible to readers by using simple and modern elements. The challenge of this project is how to let people know what these three books want to express through simple and unique cover design, and how to attract more people through the book cover design. The whole concept of this project is to understand the psychological thoughts and changes of people with mental illness through a calendar and diary. I want to express that their mental illness can be improved by reading these three books. A lot of people with mental illness do not see it on the surface, many times they will hide their thoughts in the heart, many times they do not want to reveal their thoughts to the people around them. People often record their moods on calendars and diaries or write down their inner secrets and emotions. So, the idea of calendar and diary is to express the deep thoughts of people with mental illness.