Recently, I came across something I wrote on my 20th birthday, and I often lament that one should keep more records; my older self is often inspired by my younger self. At that time, I wrote in my diary: I don't have any special birthday wishes because I believe that as long as I have a strong heart and two hands, I can achieve whatever I want. If I can achieve something on my own, I won't wish for it. I also wrote: I want to thank myself for having the ability to "believe"; I always believe that there are beautiful things in the world and that I deserve them. Even if many people see this as "idealism" or "obsession," I feel that as long as I believe that good things exist in the world and that I deserve to have them, I can keep cheering myself on, not letting myself be weak, and bravely exchange with the world to get what I want. Looking back, this kind of "belief" is what is called "youthful spirit." Now, compared to the past, I have clearly come further and gained more, but I am increasingly anxious, afraid that I won't be able to make the best choices, and I have lost the trust of a young calf that fears no tiger. And these, I want to find again from my past self.