Today, we think the smallest problem we face is the end of the world due to our egocentric mindsets created by social media and forget that there are real problems. To evaluate this issue, I decided to examine people's regrets as people find it easier to share their past experiences. More than 150 people filled an online survey and 70 of them became the content of the Book of Regrets. Book is designed like a scale; regrets become more serious as the pages proceeded and the images which are inspired by burnt chestnuts show a growth of approximately 5 thousand pixels per page.
