We often write essays in our childhood with the theme “A Letter to Our Future Selves.” But why doesn't anyone encourage us to write to our younger selves as we grow up? In our lifetime, we may have many regrets, some of which may be impossible to remedy fully. I invited 20 participants, including myself, to write a letter to their younger selves. I also added some illustrations, and crocheted butterflies to each puzzle piece because they represent transformation.